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

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

Question # 2

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

Question # 3

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

Question # 4

The work performed on an object does not depend on:

Question # 5

Work is a Quantity

Question # 6

The consumption of energy by a 60 W bulb in 2 minutes is:

Question # 7

The tidal energy is due to gravitational pull of :

Question # 8

1 J = ________?

Question # 9

Most of the geysers occur in:

Question # 10

SI Unit of work is

Question # 11

A solar cell is made from:

Question # 12

The ultimate source of money sources of energy is:

Question # 13

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

Question # 14

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

Question # 15

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 Teh consumption of energy by a 1000 watt heater in half an hour is:
A. 5 Kwh
B. 0.5 Kwh
C. 2.5 Kwh
D. 3.2 Kwh
2 The work done by a force keeping an object in circular motion with constant speed is:
A. Zero J.
B. 0.1 J
C. 1 J
D. 0.01 J
3 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
4 The work done by a force, keeping an object in circular motion with constant speed is:
A. Zero J
B. 1 J
C. 0.1 J
D. 0.01 J
5 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
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 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
8 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
9 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b
10 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these

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