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

Area under the force displacement graph gives

Question # 2

A solar cell is made from:

Question # 3

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

Question # 4

Tick the conservation force:

Question # 5

Tick the conservative force

Question # 6

Maximum work is done when force and displacement are

Question # 7

Work done by the force of friction is always

Question # 8

The space around the earth within which it expects a force of attraction on other bodies is known as:

Question # 9

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

Question # 10

The field in which work done in moving a body between two points depends upon the path followed is called:

Question # 11

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

Question # 12

The work done on the body will be zero if:

Question # 13

Work is a always done on a body when

Question # 14

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

Question # 15

If one newton force acts on a body and displaces the body through 1m work done on body is

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 When velocity of moving body is doubled, the quantity which is also doubled is its:
A. K.E.
B. Acceleration
C. Momentum
D. P.E.
2 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
3 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
4 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
5 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°
6 Work done is maximum when angle between force and displacement is
A. 0°
B. 90°
C. 180°
D. None of these
7 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
8 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
9 Which of the following types of force can do no work on the particle on which it acts
A. Frictional force
B. Gravitational force
C. Electric force
D. Centripetal force
10 The work done in moving a body between two points in a conservative field is independent of the
A. Direction
B. Force applied
C. Path followed by the body
D. Power

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