ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

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

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ECAT Pre General Science Physics Chapter 4 Work and Energy

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Question # 1

SI Unit of work is

Question # 2

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 # 3

Work is a scalar product of

Question # 4

A solar cell is made from:

Question # 5

Which force is not a conservative force?

Question # 6

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

Question # 7

Work done by the force of friction is always

Question # 8

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

Question # 9

A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:

Question # 10

Tick the conservative force

Question # 11

Work done is independent of path followed in _______

Question # 12

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

Question # 13

When a body moves against the force of friction on a horizontal plane, the work done by the body is:

Question # 14

The field in which work done in moving a body between two points depends upon the path followed is called:

Question # 15

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

Question # 16

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:

Question # 17

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:

Question # 18

The value of escape velocity of Earth planet comes out to be:

Question # 19

If force and displacement are in opposite direction, the work done is taken as

Question # 20

Work done is lowering the bucket into the well is:

Question # 21

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

Question # 22

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. the angle which the force makes with the direction of motion will be:

Question # 23

The work performed on an object does not depend on:

Question # 24

Work done along a closed path in a gravitational field is:

Question # 25

The work done by a force keeping an object in circular motion with constant speed is:

Question # 26

The energy stored int he water of the dam is:

Question # 27

A labourer carrying a distance a load on his head moves from rest on a horizontal road to another point where he comes to rest. He has done:`

Question # 28

Work is a:

Question # 29

Work has a dimension as that of:

Question # 30

Work done is maximum when angle between force and displacement is:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The value of escape velocity of Earth planet comes out to be:
A. 11 m/sec
B. 11 km/sec
C. 11 km/hour
D. 11 cm/sec
2 When the body is moves against the force of friction on a horizontal plane, the work done by the body is:
A. Positive
B. Negative
C. Zero
D. None of these
3 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
4 In the force applied to parallel to the direction of motion, then the work done is:
A. Positive
B. Negative
C. Zero
D. None of these
5 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
6 A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be
A. 60°
B. 90°
C. 30°
D. 0°
7 Which force is not a conservative force:
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
8 A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which force makes with the direction of motion of a body is:
A. 0°
B. 30°
C. 60°
D. 90°
9 A field in which the work done is moving a body along closed path is zero is called:
A. Nuclear filed
B. Conservative field
C. Gravitational field
D. Non-conservative field
10 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

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