Practice Measurement, Instruments & Physical Quantities RRB PYQ questions from Railway examinations, including RRB NTPC PYQ, RRB Group D PYQ, RRB JE PYQ, RRB ALP PYQ and RRB Technician PYQ. This Physics question collection covers important concepts related to physical quantities, units, measurement, measuring instruments, SI units and the use of different instruments for measuring physical quantities.
These RRB Physics PYQ questions are useful for understanding the types of questions asked in Railway examinations and for revising important concepts through previous year questions. Each question includes the correct answer and explanation, helping you identify mistakes and strengthen your Physics fundamentals.
Whether you are preparing for RRB NTPC Measurement PYQ, RRB Group D Measurement PYQ, RRB JE Measurement PYQ, RRB ALP Measurement PYQ, or RRB Technician Measurement PYQ, regular practice can help you improve your understanding of measurement-related concepts and build confidence for the examination.
21
1 Newton = ?
RRB Group D
2018
✓ Answer:B1 kg × 1 m s⁻²
Newton is the SI unit of force. From F = ma, 1 N = 1 kg·m·s⁻².
22
4.6 kWh = ?
RRB Group D
2018
✓ Answer:B16.56 × 10⁶ J
4.6 × 3.6 × 10⁶ J = 16.56 × 10⁶ J.
23
Which of the following is a lie detector machine?
RRB NTPC
2021
✓ Answer:CPolygraph
A polygraph is the device commonly referred to as a lie detector.
24
What is false about Richter scale?
RRB NTPC
2016
✓ Answer:DA magnitude of 8-9 on the Richter scale means a light earthquake.
A magnitude of 8–9 represents a major or destructive earthquake, not a light earthquake.
25
Which is used for measuring speed of motor-
RRB Group D
2018
✓ Answer:ASpeedometer
A speedometer measures the travelling speed of a motor vehicle.
26
Which of the following devices is used to measure relatively high temperature, such as are encountered in furnaces?
RRB NTPC
2021
✓ Answer:BPyrometer
A pyrometer measures very high temperatures without requiring direct contact with the hot object.
27
Instrument used for measuring density of liquid is-
RRB NTPC
2016
✓ Answer:BHydrometer
A hydrometer measures the relative density or specific gravity of liquids based on buoyancy.
28
Which device is used in submarines to see things above the level of the sea?
RRB NTPC
2016
✓ Answer:CPeriscope
A periscope uses mirrors or prisms to allow people inside a submarine to see objects above the water surface.
29
Which instrument is used for discovering the things in water?
RRB NTPC
2016
✓ Answer:CSonar
SONAR uses sound waves underwater to detect, locate and identify objects.
30
Which instrument is used to measure atmospheric pressure?
RRB NTPC
2016
✓ Answer:BBarometer
A barometer is used to measure atmospheric pressure.
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