Quiz: Physics Ultimate Exam Trivia!
20 Questions
| Total Attempts: 122
(209).jpg "Quiz: Physics Ultimate Exam Trivia!")
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Questions and Answers
- 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.
- 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.
- 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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