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

SI Unit of work is

Question # 2

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

Question # 3

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

Question # 4

The commercial unit of electrical energy is :

Question # 5

Maximum work is done when force and displacement are

Question # 6

Tick the conservative force

Question # 7

The tidal energy is due to gravitational pull of :

Question # 8

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

Question # 9

Teh consumption of energy by a 1000 watt heater in half an hour is:

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

When force and displacement are perpendicular to each other than work is equal to

Question # 14

A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, which makes and angle of 60° with the horizontal. The work done by the boy is:

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The tidal energy is produced due to rotation of Earth relative to:
A. Moon
B. Sun
C. Oceans
D. Water
2 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
3 If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents:
A. Power
B. Work
C. Pressure
D. None of these
4 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
5 Work is a Quantity
A. Vector
B. Scalar
C. Non-physical
D. None of these
6 Tick the conservation force:
A. Tension in a string
B. Air resistance force
C. Elastic spring
D. Frictional force
7 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
8 A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which force makes with the direction of motion of a body is:
A. 0°
B. 30°
C. 60°
D. 90°
9 In the force applied is parallel to the direction of motion, then work done is:
A. Maximum
B. Minimum
C. Zero
D. None of these
10 If work is done at the rate of 2 k j per second, then total work done is half an hour will be:
A. 0.5 Kwn
B. 2 Kwh
C. 1 Kwh
D. None of these

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