ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 4 Work and Energy

Try The 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-energy principle states that work done on the body by applied force is equal to change in:

Question # 2

Watt x second is unit of:

Question # 3

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

Question # 4

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

Question # 5

Area under the force displacement graph gives

Question # 6

A field in which the work done is moving a body along closed path is zero is called:

Question # 7

Work has the dimensions as that of

Question # 8

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

Question # 9

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

Question # 10

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

Question # 11

The types of mechanical energy is/are:

Question # 12

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

Question # 13

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

Question # 14

Work done on a body by gravity in lifting it up to certain height is

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 Escape velocity from surface of Moon as compared to that from Earth surface is:
A. Greater
B. Smaller
C. Equal
D. None of thes
2 A solar cell is made from:
A. Iron
B. Silicon
C. Germanium
D. Copper
3 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
4 Work is product of:
A. Force and velocity
B. Heat and energy
C. Force and displacement
D. None of these
5 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
6 Which of the following type 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
7 Which force is not a conservative force?
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
8 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
9 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
10 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

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