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

Work has a dimension as that of:

Question # 2

Work has the dimension as that of:

Question # 3

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

Question # 4

A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which force makes with the direction of motion of a body is:

Question # 5

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

Question # 6

A solar cell is made from:

Question # 7

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

Question # 8

Which force is not a conservative force?

Question # 9

Which of the following is not a unit of power:

Question # 10

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

Question # 11

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

Question # 12

Which one is conservative force

Question # 13

The work done on the body will be zero if:

Question # 14

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

Question # 15

The work performed on an object does not depend on:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Tick the conservation force:
A. Tension in a string
B. Air resistance force
C. Elastic spring
D. Frictional force
2 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
3 The tidal energy is produced due to rotation of Earth relative to:
A. Moon
B. Sun
C. Oceans
D. Water
4 Which force is not a conservative force?
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
5 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
6 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
7 When a wall is pushed by a person very strongly, he has done:
A. Maximum work
B. Zero work
C. Positive work
D. Negative work
8 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
9 If force and displacement are in opposite direction, the work done is taken as:
A. Positive work
B. Negative work
C. Zero work
D. Infinte work
10 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power

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