ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 4 Work and Energy

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ECAT Physics Chapter 4 Work and Energy

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Question # 1

Which of the following type of force can do no work on the particle on which it acts:

Question # 2

A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:

Question # 3

In the force applied to parallel to the direction of motion, then the work done is:

Question # 4

Tick the conservative force

Question # 5

The commercial unit of electrical energy is :

Question # 6

Work done is lowering the bucket into the well is:

Question # 7

Which force is not a conservative force:

Question # 8

The tidal energy is due to gravitational pull of :

Question # 9

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is

Question # 10

Work has a dimension as that of:

Question # 11

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

Question # 12

The Space around the Earth within which it exerts a force of attraction on other bodies is known as

Question # 13

The space around the earth in which its gravitational force acts on a body is called

Question # 14

The work done in moving a body between two points in a conservative field is independent of the

Question # 15

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work done by the force of friction is always
A. Positive
B. Zero
C. Negative
D. Maximum
2 If one newton force acts on a body and displaces the body through 1m work done on body is
A. 1 dyne
B. 1 joule
C. 1KJ
D. 1 Watt
3 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
4 Work done is independent of path followed in _______
A. Gravitational field
B. Magnetic field
C. Electric field
D. All of these
5 In the force applied is parallel to the direction of motion, then work done is:
A. Maximum
B. Minimum
C. Zero
D. None of these
6 The work performed on an object does not depend on:
A. Force applied
B. Angle at which force is inclined to the displacement
C. Initial velocity of the object
D. Displacement
7 If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents:
A. Power
B. Work
C. Pressure
D. None of these
8 The work done on the body will be zero if:
A. No force is applied on the body
B. Force is applied but no displacement
C. Angle between F(force) and d(displacement) is 90°
D. All of these are correct
9 A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, which makes and angle of 60° with the horizontal. The work done by the boy is:
A. 1.25 J
B. 12.5 J
C. 125 J
D. None of these
10 Which of the following type of force can do no work on the particle on which it acts:
A. Frictional force
B. Gravitational force
C. Electric force
D. Centripetal force

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