Quiz: Physics Ultimate Exam Trivia!

69 Questions | By District5emis | Updated: Mar 21, 2022 | Attempts: 205

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Quiz: Physics Ultimate Exam Trivia! - Quiz

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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
21.

The stress in a rod is 70 N/mm² and the modulus of elasticity is 2 x 10⁵ N/mm². what will be the strain in the rod?
- A.
  
  0.00052
- B.
  
  0.00035
- C.
  
  0.00030
- D.
  
  0.00047
22.

Which of the following material is more elastic?
- A.
  
  Rubber
- B.
  
  Glass
- C.
  
  Steel
- D.
  
  Wood
23.

The limit beyond which the material does not behave elastically is known as
- A.
  
  Proportional limit
- B.
  
  Elastic limit
- C.
  
  Plastic limit
- D.
  
  Yield point
24.

The property of a material by which it can be beaten or rolled into thin sheets, is called
- A.
  
  Elasticity
- B.
  
  Plasticity
- C.
  
  Ductility
- D.
  
  Malleability
25.

The dimension of density is __
- A.
  
  ML^-3
- B.
  
  MLT^-2
- C.
  
  LT^-2
- D.
  
  LT^-1