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

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

Question # 2

Tick the conservative force

Question # 3

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

Question # 4

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

Question # 5

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 # 6

A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:

Question # 7

The ultimate source of money sources of energy is:

Question # 8

Tick the conservation force:

Question # 9

The consumption of energy by a 60 W bulb in 2 minutes is:

Question # 10

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

Question # 11

The tidal energy is due to gravitational pull of :

Question # 12

Maximum work is done when force and displacement are

Question # 13

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

Question # 14

A labourer carrying a distance a load on his head moves from rest on a horizontal road to another point where he comes to rest. He has done:`

Question # 15

Work has the dimension as that of:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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:
A. +5 X 101J
B. +5 X 102J
C. +5 X 103J
D. +5 X 104J
2 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°
3 Tick the conservative force
A. Tension in a string
B. Air resistance
C. Elastic spring
D. Frictional force
4 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
5 The power of an electric generating station is expressed in:
A. Kilo Jule
B. Kilowatt-hour
C. Kilo watt
D. Watt
6 Work done on a body by gravity in lifting it up to certain height is
A. Maximum
B. Minimum
C. Zero
D. Negative
7 Which force is not a conservative force:
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
8 Work has a dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
9 When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is
A. 0.5 J
B. 2 J
C. 0.25 J
D. 1 J
10 The total work done in moving the body up and then down through the same height in a gravitational field is equal to:
A. mgh
B. Its wight
C. Weight X height
D. Zero

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