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

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

Question # 2

SI Unit of work is

Question # 3

The types of mechanical energy is/are:

Question # 4

Which of the following is not a unit of power:

Question # 5

Work done by the force of friction is always

Question # 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 is 25J. The angle which the force makes the direction of motion will be:

Question # 7

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

Question # 8

Area under the force displacement graph gives

Question # 9

The dimensions of work

Question # 10

Energy stored in the spring of a watch is called

Question # 11

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

Question # 12

Work is product of:

Question # 13

The commercial unit of electrical energy is :

Question # 14

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

Question # 15

Work is a

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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°
2 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
3 A laborer carrying a load on his head moves from the 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
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 or B is correct
D. Both A and B is correct
5 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
6 If force and displacement are in opposite direction, the work done is taken as
A. Positive work
B. Negative work
C. Zero work
D. Infinite work
7 Area under the force displacement graph gives
A. Power
B. Work
C. Heat
D. Energy
8 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
9 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
10 Which force is not a conservative force?
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force

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