ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

Question # 1

A solar cell converts energy of the Sun into:

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

Question # 2

Work is a Quantity

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

Question # 3

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

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

Question # 4

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

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

Question # 5

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 # 6

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:

1.25 J A
12.5 J B
125 J C
None of these D

Question # 7

Most of the geysers occur in:

Volcanic regions A
Magnetic regions B
Northern region C
None of these D

Question # 8

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

Question # 9

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

Positive A
Negative B
Zero C
None of these D

Question # 10

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

Question # 11

Which one is conservative force

Electric force A
Frictional force B
Normal force C
Air resistance D

Question # 12

Work done on a body by gravity in lifting it up to certain height is

Maximum A
Minimum B
Zero C
Negative D

Question # 13

The unit of work in CGS system is

Joule A
Erg B
Dyne C
Watt D

Question # 14

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 # 15

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

Frictional force A
Gravitational force B
Electric force C
Centripetal force D

Question # 16

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 # 17

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 # 18

The tidal energy is due to gravitational pull of :

sun A
moon B
Mars C
None of these D

Question # 19

Tick the conservation force:

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

Question # 20

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 # 21

Work has the dimensions as that of

Torque A
Angular momentum B
Linear momentum C
Power D

Question # 22

Which force is not a conservative force:

Frictional force A
Gravitational force B
Electric force C
Elastic spring force D

Question # 23

Work done in lower and bucket into the well is:

Zero A
Positive B
Negative C
None of these D

Question # 24

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:

0° A
30° B
60° C
90° D

Question # 25

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 # 26

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is

0.5 J A
2 J B
0.25 J C
1 J D

Question # 27

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

Greater A
Smaller B
Equal C
None of thes D

Question # 28

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 with the direction of motion will be:

60° A
90° B
30° C
0° D

Question # 29

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

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

Question # 30

Watt x second is unit of:

Force A
Work B
Power C
None of these D

Sr.#	Question	Answer
1	When velocity of moving body is doubled, the quantity which is also doubled is its:	A. K.E. B. Acceleration C. Momentum D. P.E.
2	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
3	A solar cell is made from:	A. Iron B. Silicon C. Germanium D. Copper
4	Which of the following types of force can do no work on the particle on which it acts	A. Frictional force B. Gravitational force C. Electric force D. Centripetal force
5	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	A. 60° B. 90° C. 30° D. 0°
6	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°
7	Which of the following is not a unit of power:	A. J-sec B. Watt C. N m/sec D. Horsepower
8	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
9	Work is a Quantity	A. Vector B. Scalar C. Non-physical D. None of these
10	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

Latest Educational News Stories

Pakistan's Largest Database of Colleges and Universities

BS Programs

University Past Papers

University Results

Exam Results 2024

Study Abroad Programs and Opportunities for Pakistani Students