Practice Sound RRB PYQ questions asked in various Railway Recruitment Board examinations. This page provides important previous year questions from the Sound chapter along with correct answers and clear explanations to help you prepare effectively for RRB Physics.
The Sound chapter covers important concepts such as the nature of sound waves, frequency range of sound waves, speed of sound, characteristics of sound, echo, SONAR and RADAR. These concepts are important for understanding the types of Physics questions commonly asked in Railway examinations.
Start practicing Sound RRB PYQs with answers and explanations and strengthen your Railway Physics preparation.
151
If air temperature increases, what happens to sound speed and the minimum distance needed to hear a distinct echo?
Supersonic describes motion faster than the local speed of sound.
156
The sound energy passing through unit area per second is called:
RRB JE
02/06/2019 (Shift-III)
2019
✓ Answer:AIntensity
Sound intensity is power transmitted per unit area, measured in W/m².
157
Which statement about sound waves is not correct?
RRB NTPC (Stage-I)
26/04/2016 (Shift-I)
2016
✓ Answer:CThey require no medium to travel
The source selects C because sound requires a medium. The other statements also need qualification: speed depends on the medium, and sound can travel long distances.
158
Speeds greater than the speed of sound in air are called:
RRB NTPC (Stage-I)
17/01/2017 (Shift-I)
2017
✓ Answer:ASupersonic
Supersonic refers to speed; infrasonic and ultrasonic refer to sound frequency.
159
What is the intensity level of a very faint audible sound?
RRB Group-D
12/12/2018 (Shift-I)
2018
✓ Answer:B0 dB
The source selects 0 dB, the conventional reference hearing-threshold level. It does not mean zero acoustic energy.
160
What is the effect of pressure on the speed of sound?
RRB NTPC (Stage-I)
07/04/2016 (Shift-I)
2016
✓ Answer:CSpeed is not affected by pressure
For an ideal gas at fixed temperature and composition, sound speed is independent of pressure.
Showing 151 – 160 of 215 MCQ Questions | Page 16 of 22
These RRB Sound PYQ questions help you understand the question pattern and important concepts from the Sound chapter. Each question is provided with the correct answer and a clear explanation, making this page useful for both revision and regular practice.
Whether you are preparing for RRB NTPC Sound PYQ, RRB Group D Sound PYQ, RRB JE Sound PYQ, RRB ALP Sound PYQ, or RRB Technician Sound PYQ, practice these previous year questions regularly to strengthen your Physics preparation.
Tags: Sound RRB Physics PYQ, Sound Previous Year Questions, RRB NTPC Sound PYQ, RRB Group D Sound PYQ, RRB JE Sound PYQ, RRB ALP Sound PYQ, RRB Technician Sound PYQ, Sound Questions for Railway Exams, Sound MCQ for RRB Exams, Physics Sound Questions, Sound Waves RRB PYQ
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