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All in One - RRB MCQ questions and Answer

 Physics MCQ

1. The commercial unit of electrical energy is ….....
  1. Watt
  2. Calorie
  3. Kilowatt hour
  4. Joule

c. Kilowatt hour
2. The S.I. unit of resistance is equivalent to:
  1. joule/coulomb
  2. volt/ampere
  3. ampere/volt
  4. coulomb/joule

b. volt/ampere
3. The physical quantity having a unit of volt/ampere is __________.
  1. work
  2. Current
  3. charge
  4. resistance

d. resistance
4. The unit of resistance is ..........
  1. Ampere
  2. Coulomb
  3. Ohm
  4. Volt

c. Ohm
5. The S.I. unit of induced potential difference is:
  1. mV
  2. A
  3. V
  4. mA

c. V
6. The S.I. unit of resistivity is:
  1. ohm/m
  2. ohm
  3. mho
  4. ohm m

d. ohm m
7. Newton is the unit to measure
  1. Power
  2. Force
  3. Pressure
  4. Resistance

b. Force
8. The SI unit of sound wave frequency was named in honour of which physicist?
  1. Werner Karl Heisenberg
  2. Heinrich Rudolf Hertz
  3. Albert Einstein
  4. JC Maxwell

b. Heinrich Rudolf Hertz
9. The work done by a force acting on an object is equal to the amount of force multiplied by the distance travelled in the direction of the force. Which of the following is NOT a unit of work?
  1. Kgm/sec²
  2. Kgm²/sec²
  3. Newton meter
  4. Joule

a. Kgm/sec²
10. The unit of Force is:
  1. gms⁻¹
  2. Kgms⁻²
  3. gms⁻²
  4. Kgms⁻¹

b. Kgms⁻²
11. Which of the following is not a unit of temperature?
  1. Fahrenheit
  2. Pascal
  3. Celsius
  4. Kelvin

b. Pascal
12. The SI unit of electrical resistivity is _______.
  1. Ohm meter
  2. Ohm
  3. Ohm/Meter
  4. Ampere

a. Ohm meter
13. The commercial unit of electric energy is
  1. watt
  2. kW
  3. kilowatt-hour
  4. joule

c. kilowatt-hour
14. The amount of radiation being emitted by a radioactive material is measured using the conventional unit_______.
  1. Pascal
  2. Watt
  3. Curie
  4. Ampere

c. Curie
15. What is measured in 'joules'?
  1. Energy
  2. Velocity
  3. Force
  4. Power

a. Energy
16. Henry per meter is the unit of _________.
  1. Watt per steradian
  2. Electronegativity
  3. Magnetic permeability
  4. electrical conductivity

c. Magnetic permeability
17. A light-year is a unit of ________.
  1. Time
  2. Intensity of light
  3. Mass
  4. Distance

d. Distance
18. A light-year is a unit of ________.
  1. Time
  2. Distance
  3. Speed of light
  4. Intensity of light

b. Distance
19. What is the SI unit of power of a lens called?
  1. Hypermetropic
  2. Dioptre
  3. Myopic
  4. Presbyopic

b. Dioptre
20. The SI unit of 'Magnetic Flux' is:
  1. Farad
  2. Henry
  3. Pascal
  4. Weber

d. Weber
21. Which of the following quantities has the SI unit as Candela?
  1. Impulse
  2. Velocity
  3. Force
  4. Luminous intensity

d. Luminous intensity
22. The rate of doing work is called power. The unit of power is ___________.
  1. Ampere
  2. Volt
  3. Kelvin
  4. Watt

d. Watt
23. Unit of power is known as _________.
  1. Watt
  2. Joule
  3. Newton
  4. Pascal

a. Watt
24. Which of the following units is used to measure the intensity of sound?
  1. Pascal
  2. Curie
  3. Decibel
  4. Joule

c. Decibel
25. Unit used for measuring the sound is -
  1. Decibel
  2. Hertz
  3. Ohm
  4. Volt

a. Decibel
26. Which of the following units is used for measuring the amount of a substance?
  1. Lux
  2. Mole
  3. Tesla
  4. Joule

b. Mole
27. What is the SI Unit of amount of substances?
  1. Radian
  2. Mole
  3. Jule
  4. Kelvin

b. Mole
28. S.I. unit of weight is -
  1. Kilogram
  2. Newton
  3. Gram
  4. Dyne

b. Newton
29. Unit of momentum is-
  1. kgms²
  2. kgms⁻¹
  3. kgms⁻²
  4. kgms

b. kgms⁻¹
30. Unit of power in industry is -
  1. Kilowatt
  2. Watt
  3. Joule
  4. Horsepower

d. Horsepower
31. S.I. unit of electric charge is -
  1. Volt
  2. Coulomb
  3. Kelvin
  4. kg

b. Coulomb
32. S.I. unit of resistance is -
  1. Coulomb
  2. Ohm
  3. Joule
  4. Newton

b. Ohm
33. Ohm is unit of which physical quantity?
  1. Resistance
  2. Charge
  3. Voltage
  4. Current

a. Resistance
34. S.I. unit of stress is -
  1. kg/cm²
  2. N
  3. N/m²
  4. Watt

c. N/m²
35. S.I. unit of electric current is-
  1. Ampere
  2. Coulomb
  3. Joule
  4. Watt

a. Ampere
36. Match the following-
(1) Magnetic flux density - (a) Tesla
(2) Self inductance - (b) Weber
(3) Magnetic flux - (c) Henry
Match -
  1. 1-b, 2-c, 3-a
  2. 1-c, 2-a, 3-b
  3. 1-a, 2-b, 3-c
  4. 1-a, 2-c,3-b

d. 1-a, 2-c,3-b
37. Which unit is equal to unit of energy-
  1. Power
  2. Density
  3. Work
  4. Force

c. Work
38. Which of the following has no unit-
  1. Density
  2. Relative density
  3. Displacement
  4. Pressure

b. Relative density
39. Ampere second is the unit of-
  1. Charge
  2. Power
  3. Voltage
  4. Energy

a. Charge
40. Gallon is generally used for -
  1. For velocity
  2. For a container
  3. For measuring the volume
  4. None of these

c. For measuring the volume
41. Which unit is used for measuring Astronomical distance?
  1. Pedometer
  2. Parsec
  3. Light year
  4. Length of Hubble

c. Light year
42. S.I. unit of pressure is-
  1. Newton/cm²
  2. Newton-m²
  3. Newton/m²
  4. Newton-cm²

c. Newton/m²
43. What is the SI unit of pressure?
  1. Pascal
  2. Radian
  3. Ampere
  4. Steradian

a. Pascal
44. Nm⁻² is S.I. unit of -
  1. Force
  2. Repulsion
  3. Momentum
  4. Pressure

d. Pressure
45. The unit of approximate distance from the earth to the sun is-
  1. Light year
  2. Astronomical Unit
  3. Kelvin
  4. Joule

b. Astronomical Unit
46. S.I. unit of force is -
  1. Kelvin
  2. Newton
  3. Pascal
  4. Volt

b. Newton
47. What is the SI unit of force?
  1. Newton
  2. Dyne
  3. Pascal
  4. Kip

a. Newton
48. Which of the following is not correctly matched-
  1. Frequency – Hertz
  2. Magnetic flux - Tesla
  3. Pressure - Pascal
  4. Electric conductance - Siemens

b. Magnetic flux - Tesla
49. S.I. unit of displacement is-
  1. Meter
  2. Kilometer
  3. Centimeter
  4. Meter per second

a. Meter
50. The S.I. unit of 'g' is same as-
  1. Pressure
  2. Momentum
  3. Velocity
  4. Acceleration

d. Acceleration

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