Practice Units and MeasurementRRB PYQ questions from Railway examinations, including RRB NTPC PYQ, RRB Group D PYQ, RRB JE PYQ, RRB ALP PYQ and RRB Technician PYQ. This topic-wise Physics question set covers important concepts related to Units and Measurement, helping you revise essential Physics concepts and understand the types of questions asked in RRB examinations.
Each question includes the correct answer and an explanation to help you understand the concept, strengthen your Physics fundamentals, and revise important Heat topics for RRB Railway examinations.
Start practicing Units and MeasurementRRB PYQs and strengthen your Physics preparation
71
Which one of these is a symbol of mole in SI unit?
RRB JE
2019
✓ Answer:Bmol
The SI symbol for the mole is mol.
72
SI unit of electric charge is
RRB Group D; RRB Group D; RRB ALP & Technician; RRB ALP & Technician; RRB NTPC
RRB Group D; RRB Group D; RRB ALP & Technician; RRB ALP & Technician; RRB NTPC
2018; 2018; 2018; 2018; 2016
✓ Answer:BCoulomb
Electric charge is measured in coulombs, with Q = It.
73
N m^2 kg^-2 is SI unit of
RRB Group D
2018
✓ Answer:DUniversal constant of gravitation
From Newton's law of gravitation, G has SI unit N·m²/kg².
74
What is the unit of electric power expenditure in an electric circuit?
RRB JE
2019
✓ Answer:AkWh
Electricity consumption is commonly expressed in kilowatt-hours (kWh), a unit of energy.
75
SI unit of resistance is
RRB Group D; RRB NTPC; RRB Group D; RRB Group D; RRB ALP & Technician; RRB NTPC
RRB Group D; RRB NTPC; RRB Group D; RRB Group D; RRB ALP & Technician; RRB NTPC
2022; 2021; 2018; 2018; 2018; 2016
✓ Answer:BOhm
The SI unit of electrical resistance is the ohm (Ω).
76
Weight has equal SI unit of
RRB Group D; RRB Group D
2018; 2018
✓ Answer:CForce
Weight is the gravitational force on a body, so both have unit newton.
77
What is another name for coulomb/second?
RRB JE
2019
✓ Answer:BAmpere
Current is charge per unit time, so 1 C/s = 1 ampere.
78
Ohm is unit of which physical quantity?
RRB JE
2019
✓ Answer:AResistance
Ohm (Ω) is the SI unit of electrical resistance.
79
Which of the following two physical quantities have the same unit?
RRB Group D
2018
✓ Answer:DForce and Weight
Weight is a force, so both weight and force are measured in newtons.
80
Lux is the SI unit of
RRB JE
2019
✓ Answer:AIntensity of illumination
Lux (lx) is the SI unit of illuminance, or intensity of illumination.
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