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 is always done on a body when:

Question # 2

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

Question # 3

Work is product of:

Question # 4

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

Question # 5

Work done by the force of friction is always

Question # 6

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

Question # 7

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

Question # 8

Which force is not a conservative force:

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:

Question # 13

1 J = ________?

Question # 14

Work is a

Question # 15

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work is a Quantity
A. Vector
B. Scalar
C. Non-physical
D. None of these
2 Power is a :
A. Vector quantity
B. Base quantity
C. Scalar quantity
D. None of these
3 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.
4 If force and displacement are in opposite direction, the work done is taken as:
A. Positive work
B. Negative work
C. Zero work
D. Infinite work
5 The value of escape velocity of Earth planet comes out to be:
A. 11 m/sec
B. 11 km/sec
C. 11 km/hour
D. 11 cm/sec
6 A solar cell converts energy of the Sun into:
A. Heat energy
B. Magnetic energy
C. Light energy
D. Sound energy
7 A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:
A. +5 x 101J
B. +5 x 102J
C. +5 x 103J
D. +5 x 104J
8 Work-energy principle states that work done on the body by applied force is equal to change in:
A. Potential energy
B. Kinetic nergy
C. Linear momentum
D. None of these
9 Most of the geysers occur in:
A. Volcanic regions
B. Magnetic regions
C. Northern region
D. None of these
10 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these

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