general science

Physics MCQ Questions and Answers Page - 1

1.

The dimension of which of the following is the same as that of impulse?

Answer/ Hint       Comment On Question

Answer : B

Explanation :

The dimension of both impulse and momentum are equal i.e MLT-1.

2.

Which set of conditions represents the easiest way to liquify a gas  ?

Answer/ Hint      

Answer : A

Explanation :

3.

The instrument that measures and records the relative humidity air is

Answer/ Hint      

Answer : B

Explanation :

4.

Which among the following is the fundamental quantity ?

Answer/ Hint      

Answer : B

Explanation :

5.

What is the minimum escape velocity of rocket to be launched in to space?

Answer/ Hint       Comment On Question

Answer : C

Explanation :

The minimum escape velocity of rocket to be launched in to space is 11.186 km/sec. Escape velocity is the minimum velocity that has to be achieved by an object, to overcome the gravitational pull of the planet earth.

6.

If the length of a simple pendulum is halved then its period of oscillation is

Answer/ Hint      

Answer : D

Explanation :

7.

Mist is caused by

Answer/ Hint      

Answer : C

Explanation :

8.

While catching a ball, a player pulls down his hands to lower the –

Answer/ Hint      

Answer : B

Explanation :

9.

A particle dropped from the top of a tower uniformly falls on ground at a distance which is equal to the height of tower. Which of the following paths will be traversed by the particle ?

Answer/ Hint      

Answer : B

Explanation :

10.

When a bottle of scent is kept open in a corner of a room its odour is felt in all parts of the room. This is due to the phenomenon of  :

Answer/ Hint      

Answer : C

Explanation :

11.

Clear nights are colder than cloudy nights because of

Answer/ Hint      

Answer : C

Explanation :

12.

In which of the following cases, kinetic energy is being used in performing work ?

Answer/ Hint      

Answer : B

Explanation :

13.

If the velocity – time graph of a particle is represented by   y = mt + c, then the particle is moving with

Answer/ Hint      

Answer : C

Explanation :

If the velocity-time graph of a particle is represented by y = mt + c, then the particle is moving with constant acceleration.

14.

A passenger standing in a bus is thrown outward when the bus takes a sudden turn. This happens due to

Answer/ Hint      

Answer : B

Explanation :

15.

When pressure is increased, the melting point to ice

Answer/ Hint      

Answer : C

Explanation :

16.

Where are mesons found  ?

Answer/ Hint      

Answer : A

Explanation :

17.

For a body moving with non-uniform velocity and uniform acceleration

Answer/ Hint      

Answer : B

Explanation :

18.

The fourth state of matter is known as

Answer/ Hint       Comment On Question

Answer : C

Explanation :

The fourth state of matter is known as plasma

19.

Knot is a measure of

Answer/ Hint       Comment On Question

Answer : A

Explanation :

Knot is a measure of the speed of ship.

20.

Which of the following pairs of physical quantities have the same dimensions ?

Answer/ Hint      

Answer : C

Explanation :

21.

The instrument for measuring intensity of earthquakes is called

Answer/ Hint       Comment On Question

Answer : D

Explanation :

The instrument for measuring intensity of earthquakes is called Seismograph

22.

Pycnometer is an instrument used to measure the

Answer/ Hint      

Answer : A

Explanation :

23.

Who defined the law of gravitation ?

Answer/ Hint      

Answer : A

Explanation :

24.

The sensation of weightlessness in a spacecraft in an orbit is due to the

Answer/ Hint      

Answer : B

Explanation :

25.

Therm is the unit of

Answer/ Hint       Comment On Question

Answer : B

Explanation :

Therm is the unit of heat.

26.

Newton’s first law of motion gives the concept of

Answer/ Hint      

Answer : D

Explanation :

27.

We always see the same face of the moon, because

Answer/ Hint      

Answer : C

Explanation :

28.

Which of the following instruments is used to measure humidity ?

Answer/ Hint      

Answer : C

Explanation :

29.

Which of the following is most elastic ?

Answer/ Hint      

Answer : C

Explanation :

30.

The swing of a spinning cricket ball in air can be explained on the basis of

Answer/ Hint      

Answer : C

Explanation :

31.

What should a person on a freely rotating turn table do to decrease his (angular) speed ?

Answer/ Hint      

Answer : C

Explanation :

32.

Smog is a combination of

Answer/ Hint      

Answer : D

Explanation :

33.

A boy sitting in an open car moving with the constant speed throws a ball straight up into the air. The ball falls

Answer/ Hint      

Answer : A

Explanation :

34.

A kilowatt-hour is unit of

Answer/ Hint      

Answer : A

Explanation :

35.

Ventilators are provided near the celling of the room because

Answer/ Hint      

Answer : A

Explanation :

36.

In severe winter, in cold countries water pipes burst because

Answer/ Hint      

Answer : D

Explanation :

37.

The density of a gas is maximum at

Answer/ Hint      

Answer : B

Explanation :

38.

The spoon dropped by an astronaut in a satellite will

Answer/ Hint      

Answer : C

Explanation :

39.

A person is hurt on kicking a stone due to

Answer/ Hint       Comment On Question

Answer : C

Explanation :

A person is hurt on kicking a stone due to reaction.

40.

Which of the following is an example for cantilever beam ?

Answer/ Hint      

Answer : B

Explanation :

41.

Which of the following liquids has the least density ?

Answer/ Hint      

Answer : C

Explanation :

42.

Two stones of different masses are dropped simultaneously from the top of a building

Answer/ Hint      

Answer : C

Explanation :

43.

Intensity of gravitational field of earth is maximum at

Answer/ Hint      

Answer : A

Explanation :

44.

When a ship enters the sea from a river

Answer/ Hint      

Answer : A

Explanation :

45.

The centre of gravity of a sprinter during the race lies

Answer/ Hint      

Answer : A

Explanation :

46.

A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole ?

Answer/ Hint      

Answer : A

Explanation :

47.

The period revolution of a geostationary satellite is

Answer/ Hint      

Answer : C

Explanation :

48.

A piece of paper and a cricket ball are dropped from the same height. Under which of the following conditions do both reach the surface simultaneously ?

Answer/ Hint      

Answer : D

Explanation :

49.

The atmospheric air is held to the Earth by :

Answer/ Hint      

Answer : A

Explanation :

50.

The time period of a seconds pendulum is

Answer/ Hint      

Answer : B

Explanation :

51.

Amount of water vapour in the atmosphere is measured in terms of

Answer/ Hint      

Answer : A

Explanation :

52.

The density of the liquid when heated

Answer/ Hint      

Answer : A

Explanation :

53.

When hot-water is sprinkled on a hotter glass tumbler, it breaks because

Answer/ Hint      

Answer : B

Explanation :

54.

Mud houses are cooler in summers and warmer in winters as compared to brick houses because

Answer/ Hint      

Answer : B

Explanation :

55.

Ice cubes are added to a glass of pure water and a glass of pure alcohol. The ice would be

Answer/ Hint      

Answer : A

Explanation :

56.

What is the principle of a ‘Life Jacket’ ?

Answer/ Hint      

Answer : B

Explanation :

57.

A sphere rolls down on two inclined planes of different angles but same height, it does so

Answer/ Hint      

Answer : B

Explanation :

58.

A rubber ball is dropped from a height of 2 meters. To what height will it rise if there is no loss of energy / velocity after rebounding ?

Answer/ Hint      

Answer : C

Explanation :

59.

When a pall of water is swung in a vertical circle, the water does not fall out at the top of the loop when the speed is

Answer/ Hint      

Answer : B

Explanation :

60.

Who enunciated the laws of planetary motion ?

Answer/ Hint      

Answer : B

Explanation :

61.

When a person sitting on a swing stands up on the swing, the frequency of oscillation

Answer/ Hint      

Answer : B

Explanation :

62.

An aircraft can perform aerobatic manoeuvres in a vertical loop because of

Answer/ Hint      

Answer : A

Explanation :

63.

Which conservation principle is applicable in the case of the motion of a rocket ?

Answer/ Hint      

Answer : C

Explanation :

64.

It is easier to carry two buckets of water in one hand each, than to carry only one in one hand because

Answer/ Hint      

Answer : C

Explanation :

65.

An athlete runs before long jump to get advantage on

Answer/ Hint      

Answer : A

Explanation :

66.

A pilot has to release the bomb to hit a target

Answer/ Hint      

Answer : C

Explanation :

67.

A light year is a measure of :

Answer/ Hint      

Answer : C

Explanation :

68.

A bomb at rest explodes into a large number of tiny fragments. The total momentum of all the fragments

Answer/ Hint      

Answer : A

Explanation :

69.

The slope of a velocity-time graph represents

Answer/ Hint      

Answer : A

Explanation :

70.

How much mechanical work must be done to completely melt 1 gram of ice at 00C ?

Answer/ Hint      

Answer : B

Explanation :

71.

A bullet is fired from a rifle which recoils after firing. The ratio of kinetic energy of the rifle to that of the bullet is

Answer/ Hint      

Answer : A

Explanation :

72.

The temperature which has the same reading on both Fahrenheit and Celsius scales is

Answer/ Hint      

Answer : B

Explanation :

73.

A bottle of sodalime is grasped by the neck and swung briskly in a vertical circle, Near which portion of the bottle do the bubbles collect ?

Answer/ Hint      

Answer : C

Explanation :

74.

The angle in which a cricket ball should be hit to travel maximum horizontal distance is :

Answer/ Hint      

Answer : B

Explanation :

75.

As we go from Equator to North pole the value of ‘g’ the acceleration due to gravity

Answer/ Hint      

Answer : C

Explanation :

76.

In the Earth, the weight of a body is maximum at the

Answer/ Hint      

Answer : D

Explanation :

77.

A man inside an artificial satellite feels weightlessness because the force of of attraction due to earth is

Answer/ Hint      

Answer : A

Explanation :

78.

Ozone layer above the surface of Earth provides a shield against

Answer/ Hint      

Answer : B

Explanation :

79.

A stone is dropped from the roof of a house towards the ground. The kinetic energy of the stone will be maximum :

Answer/ Hint      

Answer : C

Explanation :

80.

Which of the following properties is generally found in non-metals ?

Answer/ Hint      

Answer : A

Explanation :

81.

The type of mirror used in automobiles to see the traffic on the rear side is

Answer/ Hint      

Answer : D

Explanation :

Physics MCQ Questions and Answers Page - 1
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