# Quiz: Physics Ultimate Exam Trivia!

20 Questions | Total Attempts: 122  Settings  .

• 1.
Which of the following has no units?
• A.

Thermal capacity

• B.

Tensile strain

• C.

Acceleration

• D.

Impulse

• 2.
Candela is the unit of …………………
• A.

Magnetic flux

• B.

Intensity of electric field

• C.

Luminous intensity

• D.

Charge

• 3.
Which of the following is not a physical quantity?
• A.

All of the above

• B.

Candela

• C.

Henry

• D.

Kelvin

• 4.
Which one is not a dimension?
• A.

Length

• B.

Mass

• C.

Time

• D.

Kelvin

• 5.
Which of the following is NOT a method to reduce friction?
• A.

By Lubrication

• B.

By Polishing

• C.

Throwing sand on the Ground

• D.

None of the above

• 6.
Friction between moving parts of machine causes
• A.

Heat

• B.

Light

• C.

Energy

• D.

Oil

• 7.
The force of friction depends on
• A.

Nature of surface of contact

• B.

Materials of objects in contact

• C.

A & B

• D.

None of the Above

• 8.
The body will move only when
• A.

Force of friction = applied force

• B.

Force of friction < applied force

• C.

Force of friction > applied force

• D.

All of the above

• 9.
Different types of surfaces create different amount of friction
• A.

True

• B.

False

• 10.
A sledge is pulled 10m by a force 40N.what is the work done?
• A.

400 Nm

• B.

650 Nm

• C.

657 Nm

• D.

740 Nm

• 11.
Calculate the potential energy of Dam if the height is 200m and the mass of the water is 5kg (g=10m/s2)
• A.

56 KJ

• B.

50 KJ

• C.

30 KJ

• D.

10 KJ

• 12.
A girl whose mass is 40kg walks up a flight of 20 steps each 150mm height in 10secs.find the average power developed (g=10m/s2)
• A.

450 W

• B.

325 W

• C.

120 W

• D.

12 W

• 13.
A body of mass 4kg moves through a distance 80m, calculate the work done on the body. (g=10m/s2)
• A.

6.2 KJ

• B.

3.2 KJ

• C.

3.0 KJ

• D.

1.4 KJ

• 14.
An engine raises 100kg of water through a height 60m in 20sec.what is the power of the engine. (g=10m/s2)
• A.

8 KW

• B.

3 KW

• C.

2 KW

• D.

1.4 KW

• 15.
1.  If 2 resistors of 5kΩ and 7kΩ are connected in series across a 15V battery, then the current flowing through each of the resistance should be
• A.

2 mA

• B.

3.6 mA

• C.

5 mA

• D.

1.25 mA

• 16.
1. A car fuse marked 3A operates optimally on 12V battery. calculate the resistance of the fuse
• A.

3 4Ω

• B.

4Ω

• C.

6Ω

• D.

9Ω

• 17.
The opposing capacity of materials against the current flow is
• A.

Resistance

• B.

Inductance

• C.

Susceptance

• D.

Conductance

• 18.
Which of the following factors does not affect the electrical resistance of a wire?
• A.

Length

• B.

Mass

• C.

Temperature

• D.

Cross-sectional area

• 19.
An electrician wishes to cut a copper wire (ρ=1.724∗10−8Ωm) that has no more than 10Ω of resistance. The wire has a radius of 0.725mm. Approximately what length of wire has a resistance equal to the maximum 10Ω ?
• A.

960 M

• B.

478 M

• C.

356 M

• D.

200 M

• 20.
A rod 150cm long and of diameter 2cm is subjected to an axial pull of 20kN. What will be the stress?
• A.

60 N/mm2

• B.

65 N/mm2

• C.

63.6 N/mm2

• D.

71.2 N/mm2

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