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

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

Question # 2

The work performed on an object does not depend on:

Question # 3

The unit of work in CGS system is

Question # 4

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:

Question # 5

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

Question # 6

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

Question # 7

Work is product of:

Question # 8

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

Question # 9

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 # 10

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

Question # 11

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

Question # 12

Work is a Quantity

Question # 13

Energy stored in the spring of a watch is called

Question # 14

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

Question # 15

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

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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 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
3 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
4 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°
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 If one newton force acts on a body and displaces the body through 1m work done on body is
A. 1 dyne
B. 1 joule
C. 1KJ
D. 1 Watt
7 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
8 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
9 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
A. 60°
B. 90°
C. 30°
D. 0°
10 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd

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