ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

Question # 1

A solar cell is made from:

Iron A
Silicon B
Germanium C
Copper D

Question # 2

Work is a Quantity

Vector A
Scalar B
Non-physical C
None of these D

Question # 3

Work is a:

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

Question # 4

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

Zero A
10.2 J B
100 J C
980 J D

Question # 5

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

Potential A
Chemical B
Mechanical C
sound and heat D

Question # 6

Area under the force displacement graph gives

Power A
Work B
Heat C
Energy D

Question # 7

The work performed on an object does not depend on

Force applied A
Angle at which force is inclined to the displacement B
Initial velocity of the object C
Displacement D

Question # 8

Work is a scalar product of

Force, Velocity A
Velocity, Displacement B
Force, Displacement C
Force, Momentum D

Question # 9

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

0° A
90° B
180° C
None of these D

Question # 10

The tidal energy is due to gravitational pull of :

sun A
moon B
Mars C
None of these D

Question # 11

The power of an electric generating station is expressed in:

Kilo Jule A
Kilowatt-hour B
Kilo watt C
Watt D

Question # 12

Watt x second is unit of:

Force A
Work B
Power C
None of these D

Question # 13

When a wall is pushed by a person very strongly, he has done:

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

Question # 14

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

Conservative filed A
Non-conservative field B
Electric field C
None of these D

Question # 15

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 # 16

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 # 17

Tick the conservative force

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

Question # 18

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

Unity A
Infinity B
Zero C
-Fd D

Question # 19

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 # 20

The value of escape velocity of Earth planet comes out to be:

11 m/sec A
11 km/sec B
11 km/hour C
11 cm/sec D

Question # 21

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

Electric Field A
Gravitational field B
Magnetic field C
Conservative field D

Question # 22

Work done by the force of friction is always

Positive A
Zero B
Negative C
Maximum D

Question # 23

Work is always done on a body when:

A force acts on it A
It moves through certain distance B
None of A and B is correct C
Both A and B is correct D

Question # 24

Which of the following is not a unit of power:

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

The ultimate source of money sources of energy is:

Sun A
Air B
Water C
Petroleum D

Question # 27

Work is a:

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

Question # 28

The dimensions of work

[MLT^-1] A
[MLT^-2] B
[ML²T^-2] C
[MLT] D

Question # 29

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

Moon A
Sun B
Oceans C
Water D

Question # 30

The work done on the body will be zero if:

No force is applied on the body A
Force is applied but no displacement B
Angle between F(force) and d(displacement) is 90° C
All of these are correct D

Sr.#	Question	Answer
1	The value of escape velocity of Earth planet comes out to be:	A. 11 m/sec B. 11 km/sec C. 11 km/hour D. 11 cm/sec
2	Work is always done on a body when:	A. A force acts on it B. It moves through certain distance C. None of A and B is correct D. Both A and B is correct
3	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
4	The tidal energy is due to gravitational pull of :	A. sun B. moon C. Mars D. None of these
5	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:`	A. Minimum work B. Maximum work C. Zero work D. Negative work
6	When a wall is pushed by a person very strongly, he has done:	A. Maximum work B. Zero work C. Positive work D. Negative work
7	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
8	The ultimate source of money sources of energy is:	A. Sun B. Air C. Water D. Petroleum
9	Work done is maximum when angle between force and displacement is	A. 0° B. 90° C. 180° D. None of these
10	Work has the dimensions as that of	A. Torque B. Angular momentum C. Linear momentum D. Power

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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

A solar cell is made from:

Work is a Quantity

Work is a:

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

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

Area under the force displacement graph gives

The work performed on an object does not depend on

Work is a scalar product of

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

The tidal energy is due to gravitational pull of :

The power of an electric generating station is expressed in:

Watt x second is unit of:

When a wall is pushed by a person very strongly, he has done:

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

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 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:

Tick the conservative force

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

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:

The value of escape velocity of Earth planet comes out to be:

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

Work done by the force of friction is always

Work is always done on a body when:

Which of the following is not a unit of power:

A solar cell converts energy of the Sun into:

The ultimate source of money sources of energy is:

Work is a:

The dimensions of work

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

The work done on the body will be zero if:

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