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 work performed on an object does not depend on:

Question # 2

Work done is maximum when angle between force and displacement is:

Question # 3

Work is a:

Question # 4

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

Question # 5

The commercial unit of electrical energy is :

Question # 6

Which force is not a conservative force?

Question # 7

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

Question # 8

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 # 9

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

Question # 10

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 # 11

Tick the conservative force

Question # 12

The work done by a force, keeping an object in circular motion with constant speed is:

Question # 13

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 with the direction of motion will be:

Question # 14

A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, Which makes an angle of 60° with the horizontal. The work done by the boy is:

Question # 15

Work is a:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Teh consumption of energy by a 1000 watt heater in half an hour is:
A. 5 Kwh
B. 0.5 Kwh
C. 2.5 Kwh
D. 3.2 Kwh
2 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
3 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
4 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
5 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 with the direction of motion will be:
A. 60°
B. 90°
C. 30°
D. 0°
6 A two Kg block is held 1 m above the floor for 50 seconds, the work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
7 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
8 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:
A. 1.25 J
B. 12.5 J
C. 125 J
D. None of these
9 A solar cell is made from:
A. Iron
B. Silicon
C. Germanium
D. Copper
10 Work done by the force of friction is always
A. Positive
B. Zero
C. Negative
D. Maximum

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