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.
181
Sound travels fastest in which of these?
RRB Group-D
25/09/2018 (Shift-II)
2018
✓ Answer:CSteel
Sound travels faster in steel than in the listed liquids or air under ordinary conditions.
182
Which is not a characteristic quantity of a sound wave?
RRB Group-D
08/10/2018 (Shift-I)
2018
✓ Answer:DHertz
Hertz is the unit of frequency, not a separate wave characteristic.
183
A boy claps near a rock and hears an echo after 3 s. At sound speed 346 m/s, what is the distance to the rock?
RRB Group-D
11/12/2018 (Shift-II)
2018
✓ Answer:B519 m
d = vt/2 = 346 × 3/2 = 519 m.
184
In which medium does sound travel fastest among these options?
RRB JE
29/05/2019 (Shift-III)
2019
✓ Answer:DIron
The source table gives iron a higher sound speed than glass, water or air.
185
The way the brain interprets the frequency of a sound is called its _____.
RRB NTPC (Stage-I)
27/03/2021 (Shift-II)
2021
✓ Answer:CPitch
Pitch is the perception associated primarily with sound frequency.
186
When sound is reflected from a surface at least approximately 17 m away, which phenomenon can be heard distinctly?
RRB Group-D
31/10/2018 (Shift-III)
2018
✓ Answer:CEcho
The round-trip delay can reach about 0.1 s, allowing the reflected sound to be heard as an echo.
187
Which substance has the lowest sound speed among these options?
RRB Group-D
16/11/2018 (Shift-III)
2018
✓ Answer:DAir
Sound travels much more slowly in air than in these liquids and solids under ordinary conditions.
188
Repeated reflections that cause sound to persist are called:
RRB NTPC (Stage-I)
05/03/2021 (Shift-I)
2021
✓ Answer:AReverberation
Reverberation is the persistence of sound due to multiple reflections.
189
To hear a distinct echo, what minimum distance should separate the source and obstacle under the assumed conditions?
RRB Group-D
20/09/2018 (Shift-III)
2018
✓ Answer:B17.2 m
At 344 m/s and a 0.1 s minimum delay, d = 344 × 0.1/2 = 17.2 m.
190
At 25°C: A. Sound speed in air is 346 m/s. B. Sound speed in distilled water is 1498 m/s. Which is correct?
RRB Group-D
15/11/2018 (Shift-II)
2018
✓ Answer:BBoth A and B
Both values agree with the source's table of approximate sound speeds.
Showing 181 – 190 of 215 MCQ Questions | Page 19 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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