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 dimensions of work

Question # 2

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

Question # 3

Work done is lowering the bucket into the well is:

Question # 4

Work done along a closed path in a gravitational field is:

Question # 5

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

Question # 6

A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is:

Question # 7

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

Question # 8

Work is a

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

The space around the earth within it exerts a force of attraction on other bodies of known as:

Question # 13

The tidal energy is due to gravitational pull of :

Question # 14

Tick the conservative force

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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°
2 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
3 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
4 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
5 Escape velocity from surface of Moon as compared to that from Earth surface is:
A. Greater
B. Smaller
C. Equal
D. None of thes
6 In the force applied to parallel to the direction of motion, then the work done is:
A. Positive
B. Negative
C. Zero
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 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.
9 The work done by a force, keeping an object in circular motion with constant speed is:
A. Zero J
B. 1 J
C. 0.1 J
D. 0.01 J
10 Work done on a body by gravity in lifting it up to certain height is
A. Maximum
B. Minimum
C. Zero
D. Negative

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