ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

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

Try The 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

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

Question # 2

Work done is independent of path followed in _______

Question # 3

The commercial unit of electrical energy is :

Question # 4

Work is a:

Question # 5

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

Question # 6

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

Question # 7

The space around the earth within it exerts a force of attraction on other bodies of known as:

Question # 8

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

Question # 9

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

Question # 10

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

Question # 11

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

Question # 12

The angle between centripetal force and displacement of the body moving in a circle is:

Question # 13

Work has the dimensions as that of

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The angle between centripetal force and displacement of the body moving in a circle is:
A. 0°
B. 90°
C. 180°
D. None of these
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:
A. +5 x 101J
B. +5 x 102J
C. +5 x 103J
D. +5 x 104J
3 When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is
A. 0.5 J
B. 2 J
C. 0.25 J
D. 1 J
4 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
5 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
6 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
7 Work-energy principle states that work done on the body by applied force is equal to change in:
A. Potential energy
B. Kinetic nergy
C. Linear momentum
D. None of these
8 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:`
A. Minimum work
B.
Maximum work
C. Zero work
D. Negative work
9 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
10 The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is
A. Much more
B. Very small
C. No amount at all
D. None of these

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