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

The tidal energy is due to gravitational pull of :

Question # 2

The value of escape velocity of Earth planet comes out to be:

Question # 3

Tick the conservation force:

Question # 4

Energy stored in the spring of a watch is called

Question # 5

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

Question # 6

The power of an electric generating station is expressed in:

Question # 7

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

Question # 8

The work performed on an object does not depend on:

Question # 9

The energy stored int he water of the dam is:

Question # 10

When two protons are brought are brought closer potential energy of both of them:

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

Question # 12

Power is a :

Question # 13

Tick the conservative force

Question # 14

When a falling body hits ground, its KE changes to _____ energy.

Question # 15

If force and displacement are in opposite direction, the work done is taken as:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The work done on the body will be zero if:
A. No force is applied on the body
B. Force is applied but no displacement
C. Angle between F(force) and d(displacement) is 90°
D. All of these are correct
2 A field in which the work done is moving a body along closed path is zero is called:
A. Nuclear filed
B. Conservative field
C. Gravitational field
D. Non-conservative field
3 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
4 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.
5 A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:
A. +5 x 101J
B. +5 x 102J
C. +5 x 103J
D. +5 x 104J
6 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
7 Work has a dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
8 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
9 Area under the force displacement graph gives
A. Power
B. Work
C. Heat
D. Energy
10 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges

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