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

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 # 2

The work done in moving a body between two points in a conservation field is independent of the:

Question # 3

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

Question # 4

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

Question # 5

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:

Question # 6

Work has the dimensions as that of

Question # 7

The ultimate source of money sources of energy is:

Question # 8

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

Question # 9

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

Question # 10

The space around the earth in which its gravitational force acts on a body is called

Question # 11

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 # 12

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

Question # 13

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

Question # 14

Work done in lower and bucket into the well is:

Question # 15

Which of the following is not a unit of power:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Area under the force displacement graph gives
A. Power
B. Work
C. Heat
D. Energy
2 Work is a Quantity
A. Vector
B. Scalar
C. Non-physical
D. None of these
3 Work is product of:
A. Force and velocity
B. Heat and energy
C. Force and displacement
D. None of these
4 The work done in moving a body between two points in a conservation field is independent of the:
A. Direction
B. Force applied
C. Path followed by the body
D. Power
5 Which of the following types 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
6 Power is a :
A. Vector quantity
B. Base quantity
C. Scalar quantity
D. None of these
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 A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. The angle which the force makes the direction of motion will be:
A. 60°
B. 90°
C. 30°
D. 0°
9 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
10 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.

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