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

A solar cell is made from:

Question # 2

The ultimate source of money sources of energy is:

Question # 3

When a wall is pushed by a person very strongly, he has done:

Question # 4

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

Question # 5

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

Question # 6

The unit of work in CGS system is

Question # 7

When velocity of moving body is doubled, the quantity which is also doubled is its:

Question # 8

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

Question # 9

Area under the force displacement graph gives

Question # 10

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

Question # 11

Maximum work is done when force and displacement are

Question # 12

The dimensions of work

Question # 13

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:

Question # 14

Work has a dimension as that of:

Question # 15

Power is a :

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
3 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
4 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
5 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
6 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
7 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
8 The work performed on an object does not depend on:
A. Force applied
B. Angle at which force is inclined to the displacement
C. Initial velocity of the object
D. Displacement
9 The field in which work done is moving body between two points depends upon the path followed is called:
A. Conservative filed
B. Non-conservative field
C. Electric field
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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