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

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

Question # 2

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

Question # 3

The work done by a force keeping an object in circular motion with constant speed is:

Question # 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:

Question # 5

The types of mechanical energy is/are:

Question # 6

Which of the following types of force can do no work on the particle on which it acts

Question # 7

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 # 8

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

Question # 9

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

Question # 10

Work has the dimension as that of:

Question # 11

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:

Question # 12

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be

Question # 13

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

Question # 14

Escape velocity from surface of Moon as compared to that from Earth surface is:

Question # 15

Work has the dimensions as that of

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 If one newton force acts on a body and displaces the body through 1m work done on body is
A. 1 dyne
B. 1 joule
C. 1KJ
D. 1 Watt
2 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
3 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
4 The tidal energy is produced due to rotation of Earth relative to:
A. Moon
B. Sun
C. Oceans
D. Water
5 Area under the force displacement graph gives
A. Power
B. Work
C. Heat
D. Energy
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:
A. +5 X 101J
B. +5 X 102J
C. +5 X 103J
D. +5 X 104J
7 The work done 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
8 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
9 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
10 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

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