1 - A vector in space have component?
3
2 - ___ affects evaporation.
All are correct
3 - ___ is a vector quantity?
Displacement
4 - ___ is not processing?
Gathering
5 - ___ is the example of longitudinal waves.
Sound waves
6 - 1 KWh is equal to?
Both A & B
7 - 1 micrometer is equal to?
10-6m
8 - 1 Ohm × 1 Farad is equal to?
1 Second
9 - 1 Terameter=___ meter.
1012
10 - 2 parallel wires carrying currents in the opposite directions?
Repel each other
11 - 3 joule of work done in 3 seconds then power is?
1 Watt
12 - 6 joule of work done in 3 seconds then power is?
2 Watt
13 - 9 joule of work done in 3 seconds then power is?
3 Watt
14 - A 200 kg motorcycle travelling at 30 m/s hits a tree and is brought to rest in 0.10 seconds. What is the magnitude of the average force acting on the car to bring it to rest?
6 × 104N
15 - A 5 kg mass is falling freely. Force or weight acting on it will be?
Zero
16 - A ball is allowed to fall freely from certain height. It covers a distance in 1st second equal to:
g/2
17 - A ball is thrown vertically upward. Its velocity at the highest point is?
Zero
18 - A ball is thrown vertically upward. Its velocity at the highest point will be?
Zero
19 - A battery of 50 volts is attached to a series combination 0f 5Ω, 0Ω and 10Ω. The current in the circuit is?
3.34 Amp
20 - A body falling freely strikes the ground in 5 seconds. Distance covered by it in 5 seconds?
122.5 m
21 - A body has potential energy=mgh, when it is height h from the ground, at the point at the distance x below from top its potential energy will be?
Mg(h-x)
22 - A body is dropped from a tower with zero velocity reaches the ground in 4 seconds. The height of tower is about?
80m
23 - A body thrown upward making a certain angle with horizontal and moving freely under the action of gravity is called?
Projectile
24 - A boy jumps out of a moving bus. There is a danger for him to fall?
In the direction of motion
25 - A car of mass 1000 Kg was brought to rest on a level road by braking and 500 KJ of heat were produced. Find the speed of the vehicle just before the brakes were applied?
31.62 m/s
26 - A car starts from rest and covers a distance of 100 m in one second with uniform acceleration will be:
200 m/s2
27 - A car starts moving from rest. It accuires a speed of 25m/s after 20 seconds. The distance covered by the car during this time will be?
250 m
28 - A circular plate, a cube and a sphere, all made up of same material and having the same mass are heated to 3000C and left in a room. Which of them will have the slowest rate of cooling?
Sphere
29 - A constant current is sent through a helical coil. The coil:
Tends to get shorter
30 - A cricket ball is hit so that it travels straight up in air and it requires 3 seconds to reach the maximum height its initial velocity is?
29.4 m/s
31 - A dimension stands for the __ nature of certain physical quantity.
Qualitative
32 - A doctor counts 72 heartbeats in 1 minute. Its time period is?
0.83 second
33 - A force of 10 N is making an angle of 30 Degree with horizontal. Its horizontal components will be?
8.7 N
34 - A force on particle is conservative if:
Its work depends on the end points of every motion, not on the path between.
35 - A forward biased pn-junction practically offers?
Very small resistance
36 - A hole is drilled through the earth along a diameter and a stone dropped into it. When the stone is at the center of the earth it has?
Mass
37 - A hydrogen atom is in its ground state when its orbital electron?
Is in its lowest energy level
38 - A Kilowatt hour is a unit of?
Energy
39 - A lens of focal length 20 cm has a power of?
5.00 Diopters
40 - A measurement taken by Vernier Caliper with least count as 0.01 cm is recorded as 0.045 cm. It percentage uncertainty is?
0.02
41 - A measurement taken by Vernier Caliper with least count as 0.01 cm is recorded as 0.45 cm. It has fractional uncertainty?
0.02
42 - A nucleus with an excess of neutrons may decay radioactively with the emission of?
An electron
43 - A particle having 2e charge falls through a potential difference by 5v. Energy acquired by it is?
10 eV
44 - A particle is moving in a uniform circular motion with constant speed v along a circle of radius r. The acceleration of the particle is?
v2/r
45 - A pendulum has a time period of 3.0s in an inertial frame. What is time period when measured by an observer moving with a speed of 0.95c with respect to the pendulum?
9.60 s
46 - A person is hurt on kicking a stone due to?
Inertia
47 - A piece of wood is held under water. The upthrust on it will be?
Less than weight of the wood
48 - A pilot has to release the bomb to hit a target?
Before the target
49 - A positive electric charge?
Repels other positive charge
50 - A precise measurement is the one which has?
Less precision
51 - A projectile have a maximum range of 200m. What is the maximum height attained by it?
50m
52 - A projectile will cover same horizontal distance when the initials angles of projection are?
30,60
53 - A quantity not always conserves in the decay of elementary particles is?
Strangeness number
54 - A radioactive atom X emits a Beta – Particle. The resulting atom:
Has an atomic number that is one more than that of X
55 - A rheostat can be used as?
Potential Divider
56 - A satellite is revolving round the earth in a circular orbit. If the radius of the orbit is increased from R to 2R, its velocity will be?
v/√2
57 - A Shearing stress that acts on a body affects its?
Shape
58 - A sphere of radius r has volume v. If the radius of a sphere is increased to three times r what is the volume now?
27 V
59 - A square loop of wire lies in the plane of the page. A decreasing magnetic field is directed into the page. The induced current in the loop is:
Clockwise
60 - A standing wave:
Can be constructed from two similar waves travelling in opposite direction.
61 - A star appears twinkling in the sky because of?
Refraction of light by atmosphere
62 - A stone is projected vertically upwards from the ground at an initial speed of 15m/s, air resistance is negligible. What is the maximum height reached by the stone?
11 m
63 - A stone thrown from the top of a tall building follows a path that is:
Parabolic
64 - A substance having the negative temperature co-efficient of resistivity out of the following is?
Carbon
65 - A train is moving at a speed of 36km/h. Its speed expressed in m/s will be?
10m/s
66 - A transformer has 50 turns in primary and 250 turns in secondary coil. If the primary voltage is 14 V. What is output voltage?
70.00 V
67 - A truck of mass 750 Kg moving at 30 km/h hits a stationary dumpster of mass 1000 Kg. The two vehicles stick and move together after the collision. What is their speed?
12.85 Km/h
68 - A typical rocket consume about 10000 kg/s of fuel and eject burn gases at speed?
4000 m/s
69 - A vector is a tensor of rank?
1
70 - A virtual image is one?
From which light rays diverge but do not pass through.
71 - Absolute uncertainty in a measuring instrument is equal to?
Least count
72 - Absolute uncertainty in effect is __ to the least count of the measuring instrument.
Equal
73 - AC plate resistance of a diode value at saturation is?
Infinite
74 - According to Hooke's law the force needed to elongate an elastic body by an amount S is proportional to?
S
75 - According to law of conservation of energy?
Energy can not be destroyed.
76 - According to the second condition of equilibrium __ =0
∑T
77 - All of the ions that pass through crossed electric and magnetic fields without deflection have?
Speed
78 - All the food we eat in the day has about the same energy as?
1/3 liter of petrol
79 - Aluminium has __ % share in the composition of earth.
0.0823
80 - Among following which is not electromagnetic in nature?
Beta rays
81 - Among the following elementary particles , which one is never decays in free space?
Protons
82 - Among the following which waves can not be polarized?
Sound waves
83 - An accurate measurement is the one which has __ fractional error.
Less
84 - An athlete run with a speed of 12m/s. Determine the longest jump he can undertake.
14.4 m
85 - An electric current in conductor is due to the flow of?
Free electrons
86 - An ideal gas occupies a volume of 100cm3 at 20 degree centigrade and a pressure of 100 Pa. Determinate the number of moles of gas in the container?
4.11×10-6 mol
87 - An interval of 200 microsecond is equivalent to?
2×10-4 Second
88 - An object covers distance which is directly proportional to the square of the Time. Its acceleration is?
Constant
89 - An object is dropped from a height of 10m. Its velocity at the moment it touches the ground?
14.14 m/sec
90 - An object moving in a circle at constant speed:
Has an acceleration of constant magnitude
91 - An object placed between f and 2f of a convex lens produces an image that is?
Inverted, Real
92 - An object with a constant speed?
Is not accelerated
93 - Angle between two vectors 3i+4j and 4i-3j is?
90 Degree
94 - Approximately power of an electric heater is?
2 KW
95 - Area of a sphere of radius 35cm is?
1.22 m2
96 - As a pressure in an ideal gas is increased isothermally the average molecular speed:
Stays the same
97 - As we go from equator to north pole the value g, the acceleration due to gravity?
Increases
98 - At resonance the value of power factor in an LCR series circuit is?
1
99 - At the top of trajectory of a projectile, the direction of its velocity and acceleration?
Perpendicular to each other
100 - Ballistic missiles are used only for?
Short ranges
101 - Beats are the results of?
Constructive and Destructive interference
102 - Before launching of any rocket the mass of rocket due to its fuel is approximately equal to?
0.8
103 - Bomb shell explodes into four equal parts. Which of the following is conserved?
Linear momentum and Total energy
104 - Boyle's law holds good for any gas at?
Low temperature and high pressures
105 - By increasing temperature of conductor the flow rate of charges?
Decreases
106 - Capacitance of a capacitor does not depends upon?
Electric field between plates
107 - Capacitor is perfect insulator for?
Direct current
108 - Centigrade and Fahrenheit temperatures are the same at?
-400
109 - Centripetal force is a?
Vector quantity
110 - Change in momentum is a?
Vector quantity
111 - Change in position is called?
Displacement
112 - Characteristic of a wave which is independent of the others is called?
Aplitude
113 - Closeness of the electric field lines is the measure of?
Strength of field
114 - Colour code for carbon resistance usually consists of?
4 Bands
115 - Commercial unit of electric energy is?
Kilowatt-hour
116 - Coolis tube is used to produce?
X-rays
117 - Coulomb per volt is called?
Farad
118 - Curie is the unit of?
Radioactivity
119 - Density of a solid is a?
Scalar quantity
120 - Diamond has?
Four valence electrons
121 - Dimension of coefficient of viscosity are:
[ML-1T-1]
122 - Dimension of force is:
[MLT-2]
123 - Dimension of the which of the following is same that of Impulse?
Momentum
124 - Dimensions of power are?
ML2T-3
125 - Dimensions of work are?
ML2T-2
126 - Dioptre is the unit of?
Power of a lens
127 - Distances of stars are measured in?
Light year
128 - During refraction of light the quality of ___ is not changed.
Its frequency
129 - Dynamo is a device for converting?
Mechanical energy into electrical energy
130 - Electric field created by positive charge is?
Radially outward
131 - Electric field lines are closer where the field is?
Strong
132 - Electric lines of forces are parallel and equally spaced. Then electric field is?
Uniform
133 - Electron volt is a unit of?
Energy
134 - Energy dissipated usually appears as?
Heat energy
135 - Energy gap in a semiconductor is?
Less than that of an insulator.
136 - Energy is continuously created in the sun due to?
Nuclear fusion
137 - Energy stored in a dam is?
Gravitational potential energy
138 - Energy stored in the spring is called?
Elastic potential energy
139 - Energy stored in winding?
Elastic Potential Energy
140 - Energy that can harness heat stored below the earth surface is known as?
Geothermal energy
141 - ERG stands for what?
Electric Retino Graphy
142 - Error in the measurement of radius of sphere is 1%. The error in the calculated value of its volume is:
0.03
143 - Escape velocity of a body of mass 1000 Kg is 11 km/s. If the mass of the body is double then its escape velocity will be?
11 km/s
144 - Example of simple harmonic motion?
The motion of a simple pendulum
145 - Farad is defined as?
Coulomb/Volt
146 - Filament in CRO?
Conductors
147 - Following is an intensive coordinates of a thermodynamics system in equilibrium state?
Pressure
148 - For a freely falling body the total amount of energy at any point?
Remains constant
149 - For a normal person audible frequency range for sound wave lies between?
20 Hz to 20 Khz
150 - For an angle less than __ the height reached by projectile and the range both will be less.
450
151 - For coherence two light sources must have?
Be in phase, have same wavelength and same frequency
152 - For computation of electric flux the surface area should be?
Flat
153 - For long range the missiles used are called?
Guided missiles
154 - Force of 10 N makes an angle of 30 degree with y-axis. Its x-component will be?
5 N
155 - Force of limiting friction is a?
Vector quantity
156 - Formula of velocity is?
V=d/t
157 - Gamma rays can cause?
Gene mutation
158 - Gauss's law can only be applied to?
A closed surface
159 - GPS Global Positioning System consists of how many satellites?
24
160 - Grid in the Cathode Ray Oscilloscope?
Controls the brightness of spot formed.
161 - Hammer raised up has energy?
Potential energy
162 - Heat is a?
Scalar quantity
163 - Heat is closely related to which of the following?
Temperature
164 - Heaviest class of elementary particles consist of?
Baryons
165 - Here users will find all the physics Mcqs. Mechanics, Thermodynamics, Photonics, study of heat, Distance, work, force, time, machines, study of electricity, magnetism, law of motion, nuclear physics, Quantum, relativity, solar system, and all the topics
4A
166 - Horizontal component of force is a?
Vector Quantity
167 - How many electrons pass a cross section of the wire in time one hour where the current is 1A?
2.250×1022
168 - Idea of electric field lines are proposed by?
Michael Faraday
169 - Identify true statement when we see rainbow?
Sun remains behind us and we face raindrops.
170 - Identify which is not a vector quantity?
Speed
171 - Identify which is scalar quantity?
Electrostatic potential
172 - If 100 N force is making angle 60 Degree with y-axis then value of horizontal component is?
86.6 N
173 - If 50kg gate is pushed through 2m across the floor with a force of 50 N. The work done will be?
100 J
174 - If a charge is free to move in an electric field then acceleration will be?
qE/m
175 - If a force 10 N acts on body of mass 5kg for one second. Then its rate of change of momentum will be?
10 kgms-2
176 - If a force of 10 N is acting along x-axis, then its component along y-axis is?
0 N
177 - If a resistor of resistance R is connected across a battery of internal resistance 'r' then output power will be maximum when?
R=r
178 - If a vector of magnitude of 10 N is along y-axis. Then its component along x-axis?
0 N
179 - If Ax and Ay both are negative. The resultant vector will lies on?
Third quadrant
180 - If error in measurement of radius of a circle is 2% then permissible error its area will be?
0.04
181 - If potential difference across two plates of a parallel plates capacitor is doubled then the energy stored in it will be?
4 Times
182 - If Rx is negative and Ry is positive. The resultant vector will lies in?
Second Quadrant
183 - If the body of mass 2kg moving with 15m/s collides with stationary body of mass. Then after elastic collision the 2nd body will move with the velocity of?
15 m/s
184 - If the direction of force is perpendicular to the direction of motion of body then work done is?
Minimum
185 - If the distance between two charges is doubled the coulomb force will become?
One Fourth
186 - If the initial velocity of a projectile becomes doubled. The time of flight will be?
Double
187 - If the resultant of two vectors each of magnitude F is also of magnitude F. Then angle between them?
120 Degree
188 - If the time of the flight of a projectile is doubled. What happened to the maximum height attained?
Becomes four times
189 - If the two components of a vector are equal in magnitude. The vector making angle with x-axis will be?
45 Degree
190 - If the velocity of a body becomes double then its kinetic energy?
Becomes four times
191 - If two unit vectors perpendicular to each other are added then magnitude of resultant?
√2
192 - If velocity and mass of a moving object are doubled then the kinetic energy becomes?
8 times
193 - If X=A+B then X=0 when?
A=0, B=0
194 - Impulse can be defined as?
I=F×t
195 - Impulse is a?
Vector quantity
196 - In a right angled triangle length of a base is 4cm and length of perpendicular is 3cm. The length of hypotenuse is?
5cm
197 - In an atom the required centripetal force for an electron in its circular orbit is provided by?
Electrostatic force of attraction
198 - In an in-elastic collision?
Kinetic Energy is less after the collision
199 - In case of elastic collision between two bodies?
Both momentum and energy are conserved.
200 - In colour code of resistance orange colour represents?
3
201 - In CRO the output wave form of time base generator is?
Saw-Tooth
202 - In current carrying long solenoid the magnetic field produced does not depend upon?
Radius of solenoid
203 - In earth weight of body is maximum at the?
Surface
204 - In electronics what comes under tank circuit?
Capacity and inductance
205 - In gravitational field if the displacement is against the gravitational force the work done will be?
Negative
206 - In order to cause a moving body to pursue a circular path, it is necessary to apply?
Centripetal force
207 - In order to monitor 100% earth surface only one polar satellite is required. How many geostationary satellites are required to do the same?
3
208 - In projectile motion at the highest point?
Only vertical component of velocity is zero
209 - In simple harmonic motion there is always a constant ratio between the displacement of mass and its?
Acceleration
210 - In solid transfer of heat is called?
Conduction
211 - In the absence of external force the change in momentum is?
Zero
212 - In the projectile motion the vertical component of velocity?
Varies point to point
213 - In the region surrounding a current carrying wire?
Both B & C
214 - In thermodynamics work done by the system is taken as?
Positive
215 - In which quadrant 2i – 3j lies?
2nd
216 - Inertia depends upon?
Mass
217 - Instantaneous change of momentum is called:
Impulse
218 - Instrument used to see the distant objects on the earth is?
Terrestrial Telescope
219 - Instrument which uses sound waves to measure the depth of oceans is?
Sonar
220 - Integrated circuits are critical for high speed computers. The fast response is due to?
Miniaturization and close packing of components.
221 - It is possible to distinguish between transverse and longitudinal waves by studying the property?
Polarization
222 - JK-1 is the unit of?
Heat capacity
223 - K-1 is the unit of?
Co-efficient of linear thermal expansion
224 - Kilowatt hour is the unit of?
Work
225 - Kinetic energy and Potential energy are the two basic form of?
Mechanical energy
226 - Kinetic energy and potential energy are?
Inter convertible
227 - Kinetic energy can be defined as the dot product of?
Average momentum and velocity
228 - Krypton (atomic number 36) has how many electrons in its next to outermost shell?
18
229 - Land and sea breezes are the result of?
Convection
230 - LDR becomes essential when op-amp is used as?
Night switch
231 - Least count of meter rod is?
1 mm
232 - Lenz's law is a consequence of the law of conservation of?
Energy
233 - Longitudinal waves do not exhibit?
Polarization
234 - Magnetic force on a moving charged particle is perpendicular to the?
Both A & C
235 - Mass is highly concentrated form of?
Energy
236 - Mass of a star is two times the mass of the sun. How it will come to an end?
Neutron Star
237 - Mass of earth is?
6×1027 g
238 - Material having positive temperature coefficient is?
Copper
239 - Materials for rain proof coats and tents owe their water proof properties to?
Surface tension
240 - Mechanical advantage of an inclined plane can be found by which formula?
Slopelength/height
241 - mho m-1 is the SI unit of?
Conductivity
242 - Microphone is a device which transforms the?
Sound signal into current signal
243 - Millikan and Flecher could determine the charge on oil droplets in?
Electrical equilibrium
244 - Minimum number of unequal forces whose vector sum can be zero are:
3
245 - Modern physical theories indicates that?
Only moving particles exhibits wave behaviour
246 - Moment of inertia is a tensor of rank?
2nd
247 - Most ductile material is?
Platinum
248 - Motion of projectile is?
2 Dimensional
249 - Motion of rocket is based upon?
Law of conservation of momentum
250 - Motion of the wheels of a bullock-cart while moving on the road is an example of?
Translatory and Rotatory Motion
251 - National Institute for Nuclear Physics is located in?
Italy
252 - NC-1 is the SI unit of?
Electric intensity
253 - Newton's first law of motion gives the concept of?
Inertia
254 - Numerical value of black colour in carbon resistors is?
0
255 - Numerical value of green colour in colour code carbon resistor is?
5
256 - Oil rises up the wick in a lamp because?
Of the capillary action phenomenon
257 - On which of the following techniques photo state machine works?
Electrostatic image-Making
258 - one Femto is equal to?
44849
259 - One kilo watt hour is the work done by an agency of one kilowatt power is?
1 hour
260 - One watt hour is equal to?
3.6 KJ
261 - Optic fibres are used in?
Endoscopy
262 - Parsec is the unit of measurement of?
Astronomical distance
263 - Penetrating power of X-Rays increase with?
Increase in its intensity
264 - Period of revolution of a geostationary satellite is?
24 Hours
265 - Plastic material commonly used for making gear wheels is?
Nylons
266 - Potential difference between the head and tail of an electric eel is?
600 Volts
267 - Pressure cooker cooks faster because?
Higher temperature is attained for cooking.
268 - Pressure is a ___ quantity.
Scalar
269 - Problem related to the optic nerve is?
Glaucoma
270 - Process by which electrons are emitted by hot metal surface is known as?
Thermionic emission
271 - Product of charge and potential difference is?
Energy
272 - Product of resistance and capacitance is called?
Time constant
273 - Product of resistance and capacitance is called?
Time
274 - PV of an ideal gas is given by?
PV=n RT
275 - Racing cars are made stable by?
Lowering their center of gravity
276 - Railway tracks are banked on carves so that?
Necessary centripetal force may be obtained from the horizontal component of the normal reaction due to track.
277 - Rain drops fall from great height. Which among the following statements is true regarding it?
They fall with that ultimate velocity which are different for different droplets.
278 - Range of projectile is proportional?
Sin2Θ
279 - Range of the projectile is same for the following pair of angles?
25 and 65
280 - Rate of change of velocity is called?
Acceleration
281 - Rest mass energy of an electron is?
0.511×106 eV
282 - Rocket equation is given as?
a=mv/M
283 - SI unit of electric flux is?
Nm2C-1
284 - SI unit of resistance is?
Oham
285 - Slemen is the unit of?
Conductance
286 - Snow on the mountains does not melt all at once when it is heated by the sun because?
It reflects most of the heat from the sun
287 - Solid bodies are charged due to transfer of?
Electrons
288 - Sound is form of which type of energy?
Mechanical
289 - Specific heat of a substance A is greater than that of substance B. The masses are the same. If equal amount of energy is carried out by heat to both these substances, the one reaching the higher temperature (assuming no melting freezing or evaporation oc
Substance B
290 - Specific resistance of a material depends upon?
Temperature
291 - Study of electric charges at rest under the action of electric forces is known as?
Electronstatics
292 - Sublimation refers to?
Vaporization of solid without first becoming a liquid
293 - Substance which conducts current in the solid state is?
Graphite
294 - Sum of electric and magnetic force is called?
Lorentz Force
295 - Sum of two perpendicular forces 8 N and 6 N is?
10 N
296 - Surface tension of water on adding detergent to it?
Decreases
297 - Symbol used to show specific resistance?
s
298 - Temperature co-efficient of resistivity is measured in?
K-1
299 - The absolute uncertainty for vernier callipers of LC=0.01 cm is?
0.1 mm
300 - The amount of energy equal to 1.6×10-19 J is called?
One electron volt
301 - The angle of projection to cover maximum horizontal range is?
45 Degree
302 - The angular velocity of revolution of the planet around the sun in an elliptical orbit __ when the planet comes closer to the sun.
Increase
303 - The area under a velocity-time graph represents?
Displacement
304 - The area under the curve of force-displacement graph represents?
Work
305 - The charging time of capacitor depends upon?
RC
306 - The dimension for force F?
MLT-2
307 - The dimensional unit of impulse is?
[MLT-1]
308 - The dimensional units of ratio of work and power is?
T
309 - The direction of induced emf in a circuit is in accordance with conservation of?
Energy
310 - The direction of vector in space is specified by?
3 – Angle
311 - The distance travelled by a body falling from rest in first, second and third seconds are in ratio?
0.04380787037
312 - The dot product of vector A with itself results?
A2
313 - The dot product of vectors A=5i-4j and B=i+j+k where I, j, k are unit vectors is?
1
314 - The earth surface or a point at infinity from the earth can be chosen as zero reference level of?
Gravitational potential energy
315 - The electron volt is a unit of?
Energy
316 - The energy of a quantum state is primarily depends upon the quantum number?
n
317 - The escape velocity for the earth depends upon?
Both A & C
318 - The escape velocity of a body on the surface of earth 11.2 km/s. The escape velocity on the surface of another planet of same mass as that of earth but of ¼ times of the radius of the earth is?
22.4 km/s
319 - The fact than an electric field is produced in a conductor whenever magnetic lines of force moves across it is referred to as?
Faraday's law
320 - The force of 15 N makes an angle of 90 degree with x-axis. Its Y-component is?
15 N
321 - The force of gravity above the earth surface is proportional to and inside the earth it is proportional to?
1/r2, r
322 - The gravitational potential energy is always determined relative to some arbitrary position which is assigned the value of?
Zero potential energy
323 - The horizontal range of projectile at 300 with horizontal is the same as that an angle of?
600
324 - The increase in capacitance of a capacitor due to presence of dielectric is due to __ of dielectric.
Electric polarization
325 - The intensity level of rusting of leaves is?
10 dB
326 - The intensity of sound unit is?
Decibel
327 - The ionization energy of an atom relative to the binding energy of its nucleus is?
Smaller
328 - The kinetic energy of bullet of mass 500 g moving at a speed of 200 m/s?
10,000J
329 - The magnitude of (i×j) is equal to?
k
330 - The magnitude of i.(j×k) is equal to?
1
331 - The magnitude of the resultant of two forces 6 N and 8 N acting at right angle is?
10 N
332 - The mass of a star is two times the mass of the sun?
Neutron star
333 - The mass of oxygen is 32 u(atomic mass unit). How many molecules of oxygen are in 32 g of oxygen?
1×(6.022×1023) molecules
334 - The moment arm is represented by a sign?
L
335 - The momentum of an object at a given instant is independent of its:
Acceleration
336 - The number of Neutron in Tritium is?
2
337 - The number of significant figures in 100.8 s is?
4
338 - The number of vectors that can be added by head to tail rule is?
Any number
339 - The original source of tidal energy is?
Moon
340 - The particles emitted from a hot cathode surface are called?
Electrons
341 - The percentage uncertainty in measurement of mass and velocity are 2% and 3%. The maximum uncertainty in the measurement of kinetic energy?
0.08
342 - The potential energy of an object on the surface of earth is equal to?
Zero
343 - The presence of magnetic field can be detected by?
Magnetic compass
344 - The pressure is 2.5 atmospheres (atm). What is it in Pascal?
2.53×105 Pa
345 - The quantam number which is not involved in describing the orbit of an atom electron is?
s
346 - The range of projectile is same for angles?
35,55
347 - The range of projectile will be same when the angle of projection is?
30 degree and 60 degree
348 - The rate of change in momentum of a body is equal to?
Applied Force
349 - The refractive index of water is?
1.33
350 - The resultant of two forces 3 N and 4 N acting at right angle to each other is?
5 N
351 - The resultant of two forces 30 N and 40 N acting parallel to each other is?
70 N
352 - The resultant of two vectors having magnitude 12 N and 8 N can not be?
2 N
353 - The rotational analogue of force in linear motion is?
Torque
354 - The scattered photon in Compton effect has?
Less energy than the incident photon and smaller frequency.
355 - The separation between the plates of a parallel plates capacitor, whose original capacitance was C is doubled, the capacitance is now?
C/2
356 - The SI unit of work is?
Joule
357 - The smallest sub division of a compound that exhibit its characteristic properties is called?
A molecule
358 - The speed of sound in air is affected by changes in?
Temperature
359 - The temperature co efficient of resistance of a semiconductor is?
Negative
360 - The time rate of doing work is known as?
Power
361 - The time required for a current to be established in a circuit depends upon the?
The inductance and resistance
362 - The time required to charge a capacitor depends upon the?
Product of capacitance and the resistance in the circuit
363 - The total energy of an atomic electron is?
Less than zero
364 - The typical source of wave energy is?
Sun
365 - The unit of density in system international is?
kg m-3
366 - The unit of the energy is same as that of?
Work
367 - The value of coefficient of linear thermal expansion of brass is?
1.9×10-5K-1
368 - The value of escape velocity of earth is?
11×103 m/s
369 - The value of 'g' at the center of earth is?
Zero
370 - the value of the escape velocity for earth is approximately equal to?
11 km/s
371 - The velocity of projectile is maximum?
At the point of launching
372 - The weight of a body falling freely is?
Zero
373 - The work done is negative when the angle between the force and displacement is?
180 Degree
374 - The work done will be zero when the angle between force and displacement is?
90 Degree
375 - The work function for silver surface is 4.73 eV. Find the minimum frequency that light must have to eject electrons from this surface (h=6.63×10-34 J.s)?
1.14×1015Hz
376 - There are no expected lines absent from the spectra of?
Hydrogen
377 - Three up quarks combine to form a new particle. The charge on this particle is?
2e
378 - Time period is presented by?
T
379 - Total change in momentum of moving body is equal to?
Impulse
380 - Two blocks of lead, one twice as heavier as the other, are both at 50 degree centigrade, the ratio of the heat content of the heavier block to that of the lighter block is?
2
381 - Two coils have a mutual inductance of 2H. As a result of mutual inductance an emf of 4V exists in one cell. It follows that in the other cell?
A current changing at the rate of 2 C/s flows
382 - Two electron in a hellium atom?
Have opposite spin
383 - Two equal and opposite point charges separated by a distance 2m. The electric potential at the midway between them is?
Zero
384 - Two equal but unlike parallel forces having different line of action produce?
Couple
385 - Two objects with masses M and m(m
Move but with a smaller acceleration than m
386 - Two parallel wires carrying current in the opposite direction?
Repel each other
387 - Two stones of different masses are dropped simultaneously from the top of a building?
Both the stones reach the ground at the same time
388 - Two vectors can be added by simple arithmetical method when they are at an angle of?
0 Degree
389 - Two waves each of amplitude 1.5mm and frequency 10Hz are travelling in opposite direction with a speed of 20 mm/s. The distance in mm between adjacent nodes is?
2
390 - ـــــ is transfer by waves?
Energy
391 - Ultraviolet radiations of the sun do not reach the earth because earth atmosphere is surrounded by?
Ozone
392 - Under the action of a torque, if the rotation produced is anticlockwise, the torque is considered te be?
Positive
393 - Unit of energy density of electric field is?
JV-1
394 - Unit of noise pollution is?
Decibel
395 - Unit of viscosity is?
kgm-1s-1
396 - Unstable elementary particles heavier than the proton are called?
Hyperons
397 - Value of g increases with?
Decrease in Altitude
398 - Water flows out from a pipe at 3 kg/sec and its velocity changes from 5 m/s to zero on striking the wall. The force due to water flow?
15 N
399 - Water is an excellent solvent because its molecules are?
Polar
400 - Watt – day is the unit of?
Energy
401 - Weight is a?
Vector quantity
402 - What apparutus is used to locate a submerged object?
Sonar
403 - What is colour of light related to?
Frequency
404 - What is the correct formula of angular momentum?
L=r×p
405 - What is the equation of Hook's Law?
F=-Kx
406 - What is the equation of Joule's law?
w=I2Rt
407 - What is the lighest metal?
Aluminium
408 - What is the minimum escape velocity of rocket to be launched into space?
11 Km/Sec
409 - What is the nature of binding of CH4?
Covalent
410 - What is the resistance of a carbon resistor which has bands brown, black and brown?
100 Ohm
411 - What is the SI unit of electric energy?
NC-1
412 - What is the SI unit of magnetic flux?
Weber
413 - What is the system international unit of specific heat capacity?
J/kg K
414 - What is the unit of universal gravitational constant?
Nm2/Kg2
415 - What is viewed through an electron microscope?
Structure of bacteria and viruses
416 - What principle explains the working of the hydraulic brakes in automobiles?
Pascal's law
417 - What principle explains the working of the hydraulic brakes in automobiles?
Pascal's law
418 - Wheatstone bridge is?
Circuit
419 - When a beam of light is used to determine the position of an object, the greatest accuracy is obtained if the light?
Have shorter wavelength
420 - When a body goes upward then its?
Kinetic energy decreases and Potential energy increases.
421 - When a body is taken from earth to moon?
Weight changes but mass remains same
422 - When a charge is projected perpendicular to a uniform magnetic field its path?
Circular
423 - When a metcor enters into earth atmosphere the energy converts into?
Heat energy
424 - When a sound waves goes from air into water, which quantity will remain unchanged?
Frequency
425 - When a strong beam of light is passed through a colloidal solution the light will?
Be scattered
426 - When dielectric is placed between the plates of capacitor the value of E between the plates?
Decreases
427 - When silicon is doped with a trivalent impurity it is referred to as?
Acceptor atoms
428 - When the force is parallel to the direction of body the work done is?
Maximum
429 - When the object is moving towards earth the value of "g" is taken as?
Positive
430 - When the projectile reaches the highest point of trajectory. The vertical component of velocity becomes?
Zero
431 - When there is no loss of kinetic energy and momentum then collision is called?
Elastic collision
432 - Which among the following is a vector quantity?
Momentum
433 - Which among the following is a vector quantity?
Acceleration
434 - Which among the following is a vector quantity?
Velocity
435 - Which among the following is the fundamental quantity?
Time
436 - Which combination of colour is the most conveniet during day and night time?
Red and Green
437 - Which conservation principle is applicable in the case of the motion of rocket?
Conservation of Momentum
438 - Which device decrease the alternating voltage?
Step down transformer
439 - Which is not the basic operation of Boolean algebra?
YES operation
440 - Which is not the unit for mass?
Dyn
441 - Which material have large specific heat?
Water
442 - Which of the following determine the acceleration due to gravity?
The shape, density and the rotation of the earth
443 - Which of the following force do not work in displacing a body?
Centripetal force
444 - Which of the following is conservative force?
Electric force
445 - Which of the following measurements of length is most precise?
5.421 cm
446 - Which of the following pair have the same dimensions?
Impulse, Momentum
447 - Which of the following remains constant during motion of a projectile fired from a planet?
Horizontal component of velocity
448 - Which of the following validates the statement that matter can neither be created nor destroyed?
Law of conservation of mass
449 - Which of the given remain same at all points on the trajectory of a projectile?
Its acceleration
450 - Which one is the biggest unit of energy?
Kilo-watt-hour
451 - Which one of the following particles moving in the magnetic field can not be deflected?
Neutron
452 - Which one of the following statements correctly describes the abilities of engine A and B to do work. If engine A has a greater power rating than engine B?
Engine A can do more work than engine B in the same amount of time.
453 - Which pair has the same dimension?
Force and Torque
454 - Which quantity have different dimensions?
Pressure
455 - Which quantity increase to double to get double kinetic energy?
Mass
456 - Work done in earth gravitational field is?
Independent of the path followed
457 - Work done is maximum when the angle between force and displacement is?
Zero Degree
458 - Work done will be zero when angle between force F and displacement d is?
90 Degree
459 - Work has dimension like?
Torque
460 - X-Rays region lies between?
Gamma rays and ultraviolet region
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