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

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

Question # 2

Work done is independent of path followed in _______

Question # 3

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

Question # 4

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

Question # 5

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

Question # 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:

Question # 7

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

Question # 8

Which force is not a conservative force?

Question # 9

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

Question # 10

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

Question # 11

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 # 12

Work is always done on a body when:

Question # 13

Maximum work is done when force and displacement are

Question # 14

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 # 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 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b
2 The field in which work done in moving a body between two points depends upon the path followed is called:
A. Conservative field
B. Non-conservative field
C. Electric field
D. None of these
3 The tidal energy is produced due to rotation of Earth relative to:
A. Moon
B. Sun
C. Oceans
D. Water
4 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
5 Work is a always done on a body when
A. A force acts on it
B. It moves through certain distance
C. None of A or B is correct
D. Both A and B are correct
6 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
7 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
8 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd
9 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
10 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°

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