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

Maximum work is done when force and displacement are

Question # 2

Work-energy principle states that work done on the body by applied force is equal to change in:

Question # 3

A solar cell is made from:

Question # 4

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

Question # 5

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

Question # 6

Area under the force displacement graph gives

Question # 7

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

Question # 8

Which of the following is not a unit of power:

Question # 9

When force and displacement are perpendicular to each other than work is equal to

Question # 10

The work done on the body will be zero if:

Question # 11

Work is a Quantity

Question # 12

The work performed on an object does not depend on

Question # 13

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

Question # 14

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 # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
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:
A. 2 J
B. 0.25 J
C. 1 J
D. 0.5 J
3 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
4 SI Unit of work is
A. Nm-1
B. Joule
C. Nms
D. Both a and b
5 If one newton force acts on a body and displaces the body through 1m work done on body is
A. 1 dyne
B. 1 joule
C. 1KJ
D. 1 Watt
6 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
7 Which force is not a conservative force:
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
8 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
9 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
10 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

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