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

Which force is not a conservative force?

Question # 2

Work is always done on a body when:

Question # 3

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

Question # 4

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 # 5

Area under the force displacement graph gives

Question # 6

Work is always done on a body when:

Question # 7

The power of an electric generating station is expressed in:

Question # 8

Power is a :

Question # 9

Work has the dimension as that of:

Question # 10

The Space around the Earth within which it exerts a force of attraction on other bodies is known as

Question # 11

When a body moves against the force of friction on a horizontal plane, the work done by the body is:

Question # 12

The commercial unit of electrical energy is :

Question # 13

Escape velocity from surface of Moon as compared to that from Earth surface is:

Question # 14

Teh consumption of energy by a 1000 watt heater in half an hour is:

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The work done moving a body between two points in a conservation field is independent of the:
A. Direction
B. Force applied
C. Path followed by the body `
D. Power
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 The Space around the Earth within which it exerts a force of attraction on other bodies is known as
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
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 SI Unit of work is
A. Nm-1
B. Joule
C. Nms
D. Both a and b
6 The work done in moving a body between two points in a conservation field is independent of the:
A. Direction
B. Force applied
C. Path followed by the body
D. Power
7 A solar cell converts energy of the Sun into:
A. Heat energy
B. Magnetic energy
C. Light energy
D. Sound energy
8 A body moves a distance of 10 m among a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which the force makes with the direction of motion of a body is:
A. 0°
B. 30°
C. 60°
D. 90°
9 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
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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