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

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 # 2

The unit of work in CGS system is

Question # 3

Work done in lower and bucket into the well is:

Question # 4

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 # 5

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

Question # 6

Work is a

Question # 7

Which force is not a conservative force:

Question # 8

Work done on a body by gravity in lifting it up to certain height is

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

A field in which the work done in moving a body along closed path is zero is called

Question # 11

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 # 12

Tick the conservation force:

Question # 13

Energy stored in the spring of a watch is called

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
2 The space around the earth in which its gravitational force acts on a body is called
A. Electric Field
B. Gravitational field
C. Magnetic field
D. Conservative field
3 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b
4 Work is always done on a body when:
A. A force acts on it
B. It moves through certain distance
C. None of A and B is correct
D. Both A and B is correct
5 Tick the conservative force
A. Tension in a string
B. Air resistance
C. Elastic spring
D. Frictional force
6 A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is:
A. +5 X 101J
B. +5 X 102J
C. +5 X 103J
D. +5 X 104J
7 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
8 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
9 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
10 Work done is independent of path followed in _______
A. Gravitational field
B. Magnetic field
C. Electric field
D. All of these

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