ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

Question # 1

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:

Power A
Work B
Pressure C
None of these D

Question # 2

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:

Minimum Work A
Maximum Work B
Zero Work C
Negative Work D

Question # 3

Work done by the force of friction is always

Positive A
Zero B
Negative C
Maximum D

Question # 4

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

Nuclear filed A
Conservative field B
Gravitational field C
Non-conservative field D

Question # 5

Work is a

Scalar quantity A
Vector quantity B
Base quantity C
None of these D

Question # 6

Power is a :

Vector quantity A
Base quantity B
Scalar quantity C
None of these D

Question # 7

The tidal energy is produced due to rotation of Earth relative to:

Moon A
Sun B
Oceans C
Water D

Question # 8

When two protons are brought are brought closer potential energy of both of them:

Increases A
Decreases B
Remains same C
None of these D

Question # 9

Work done is lowering the bucket into the well is:

Zero A
Positive B
Negative C
None of these D

Question # 10

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

0° A
90° B
180° C
None of these D

Question # 11

The space around the earth within which it expects a force of attraction on other bodies is known as:

Nuclear field A
Conservative field B
Electric field C
Gravitational field D

Question # 12

When velocity of moving body is doubled, the quantity which is also doubled is its:

K.E. A
Acceleration B
Momentum C
P.E. D

Question # 13

SI Unit of work is

Nm^-1 A
Joule B
Nms C
Both a and b D

Question # 14

The ultimate source of money sources of energy is:

Sun A
Air B
Water C
Petroleum D

Question # 15

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

0° A
90° B
180° C
None of these D

Question # 16

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

2 watt-hour A
120 watt-hour B
30 watt-hour C
None of these D

Question # 17

Tick the conservative force

Tension in a string A
Air resistance B
Elastic spring C
Frictional force D

Question # 18

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

Positive work A
Negative work B
Zero work C
Infinite work D

Question # 19

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

Potential A
Chemical B
Mechanical C
sound and heat D

Question # 20

Watt x second is unit of:

Force A
Work B
Power C
None of these D

Question # 21

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

Much more A
Very small B
No amount at all C
None of these D

Question # 22

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:

60° A
90° B
30° C
0° D

Question # 23

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

mgh A
Its wight B
Weight X height C
Zero D

Question # 24

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:

+5 x 10¹J A
+5 x 10²J B
+5 x 10³J C
+5 x 10⁴J D

Question # 25

A solar cell converts energy of the Sun into:

Heat energy A
Magnetic energy B
Light energy C
Sound energy D

Question # 26

Work has the dimensions as that of

Torque A
Angular momentum B
Linear momentum C
Power D

Question # 27

Which of the following is not a unit of power:

J-sec A
Watt B
N m/sec C
Horsepower D

Question # 28

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

Direction A
Force applied B
Path followed by the body C
Power D

Question # 29

The energy stored int he water of the dam is:

Electric energy A
Kinetic energy B
Potential energy C
None of these D

Question # 30

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

Zero J A
1 J B
0.1 J C
0.01 J D

Sr.#	Question	Answer
1	The work performed on an object does not depend on:	A. Force applied B. Angle at which force is inclined to the displacement C. Initial velocity of the object D. Displacement
2	The Space around the Earth within which it exerts a force of attraction on other bodies is known as	A. Nuclear field B. Conservative field C. Electric field D. Gravitational field
3	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
4	Work has the dimensions as that of	A. Torque B. Angular momentum C. Linear momentum D. Power
5	The work performed on an object does not depend on:	A. Force applied B. Angle at which force is inclined to the displacement C. Initial velocity of the object D. Displacement
6	When force and displacement are perpendicular to each other than work is equal to	A. Unity B. Infinity C. Zero D. -Fd
7	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
8	When two protons are brought are brought closer potential energy of both of them:	A. Increases B. Decreases C. Remains same D. None of these
9	The work done on the body will be zero if:	A. No force is applied on the body B. Force is applied but no displacement C. Angle between F(force) and d(displacement) is 90° D. All of these are correct
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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ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 4 Work and Energy

ECAT Pre General Science Physics Chapter 4 Work and Energy

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 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:

Work done by the force of friction is always

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

Work is a

Power is a :

The tidal energy is produced due to rotation of Earth relative to:

When two protons are brought are brought closer potential energy of both of them:

Work done is lowering the bucket into the well is:

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

The space around the earth within which it expects a force of attraction on other bodies is known as:

When velocity of moving body is doubled, the quantity which is also doubled is its:

SI Unit of work is

The ultimate source of money sources of energy is:

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

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

Tick the conservative force

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

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

Watt x second is unit of:

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

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:

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

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 solar cell converts energy of the Sun into:

Work has the dimensions as that of

Which of the following is not a unit of power:

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

The energy stored int he water of the dam is:

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

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