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
41
What is measured in joules?
RRB NTPC
2021
✓ Answer:AEnergy
Joule is the SI unit of energy and work.
42
Which fundamental SI unit is derived directly from the definition of Ampere?
RRB Technicians Grade-I
2024
✓ Answer:ACoulomb
From I = Q/t, charge Q = I·t, so the coulomb is derived directly from ampere and second.
43
Henry per meter is the unit of
RRB ALP (Stage-II)
2019
✓ Answer:CMagnetic permeability
Henry per metre (H/m) is the SI unit of magnetic permeability.
44
What is the unit of angular momentum in the SI system of units?
RRB Technicians Grade-I
2024
✓ Answer:Bkg m^2 s^-1
Angular momentum L = mvr, giving kg × m/s × m = kg·m²·s^-1.
45
A light-year is a unit of
RRB NTPC
2021
✓ Answer:DDistance
A light-year measures distance: the distance travelled by light in vacuum in one year.
46
What is equivalent to 1 bar in unit of pressure?
RRB Technicians Grade-I
2024
✓ Answer:C10^5 Pa
One bar is defined as 10^5 pascals, and 1 Pa = 1 N/m².
47
Light-year is the unit of
RRB JE
2014
✓ Answer:BDistance
A light-year is a unit of astronomical distance, not time.
48
Which of the following combinations represents the SI derived units?
RRB Technicians Grade-I
2024
✓ Answer:AVolt, Newton, Joule
Volt, newton and joule are derived from SI base units; kelvin, mole, ampere, metre and kilogram are base units.
49
What is the SI unit of power of a lens called?
RRB NTPC
2021
✓ Answer:BDioptre
Lens power is P = 1/f when f is in metres, so its unit is dioptre (D).
50
What is the SI unit of acceleration?
RRB Technician Grade-II; RRB ALP (Stage-II); RRB Group D
2024; 2024; 2018; 2018; 2018; 2018
✓ Answer:Cm s^-2
Acceleration is change in velocity per unit time, so its SI unit is m/s².
Showing 41 – 50 of 94 MCQ Questions | Page 5 of 10
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