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.
1
What forms the compressions and rarefactions in a sound wave traveling through air?
RRB Group D
09 Aug, 2026 (9:00 AM - 10:30 AM)
2026
✓ Answer:CParticles in the air bunch together and spread apart alternately
In a longitudinal sound wave, particles oscillate back and forth, alternately forming crowded regions (compressions) and spread-out regions (rarefactions).
2
Which of the following features is unique to longitudinal sound waves?
RRB Group D
11 Aug, 2026 (4:30 PM - 6:00 PM)
2026
✓ Answer:AThey form regions of compression and rarefaction.
The correct choice is They form regions of compression and rarefaction.. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
3
A student shouts facing a building 220 meters away. If the speed of sound is 330 m/s, how long after the shout will the echo be heard?
RRB Group D
18 Aug, 2026 (4:30 PM - 6:00 PM)
2026
✓ Answer:D1.33 s
The sound travels to the building and back, so distance = 2×220 = 440 m. Time = 440/330 ≈ 1.33 s.
4
Which of the following best describes the effect of excessive reverberation in a large auditorium during a speech?
RRB Group D
18 Aug, 2026 (9:00 AM - 10:30 AM)
2026
✓ Answer:AIt causes spoken words to overlap and become unclear to the audience.
Excessive reverberation causes successive reflections to overlap, making speech less distinct and harder to understand.
5
When a bell rings inside a jar and the air is slowly removed, what happens to the sound?
RRB Group D
19 Aug, 2026 (12:45 PM - 2:15 PM)
2026
✓ Answer:BThe sound becomes fainter as air is removed
Sound needs a material medium. As air is removed, less sound reaches the listener, so the bell becomes fainter.
6
Which of the following statements best describes how the speed of sound changes as it moves from air into water?
RRB Group D
12 Aug, 2026 (4:30 PM - 6:00 PM)
2026
✓ Answer:AThe speed of sound increases when moving from air to water.
Sound travels faster in water than in air because the particles are more closely coupled and the medium is much less compressible.
7
Which of the following examples best illustrates a high pitch sound in everyday life?
RRB Group D
25 Aug, 2026 (9:00 AM - 10:30 AM)
2026
✓ Answer:DA child blowing a whistle
The correct choice is A child blowing a whistle. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
8
Which of the following best describes an echo in the context of sound propagation and reflection?
RRB Group D
12 Aug, 2026 (12:45 PM - 2:15 PM)
2026
✓ Answer:BAn echo is a reflected sound heard distinctly after the original sound.
The correct choice is An echo is a reflected sound heard distinctly after the original sound.. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
9
A student shouts facing a tall building 176 meters away and hears the echo after 1 second. What is the speed of sound in air based on this observation?
RRB Group D
12 Aug, 2026 (4:30 PM - 6:00 PM)
2026
✓ Answer:D352 m/s
The sound travels 2×176 = 352 m in the round trip. Therefore speed = 352/1 = 352 m/s.
10
Which of the following methods is commonly used to measure reverberation in a room?
RRB Group D
10 Aug, 2026 (9:00 AM - 10:30 AM)
2026
✓ Answer:CTiming how long sound persists after the source stops
Excessive reverberation causes successive reflections to overlap, making speech less distinct and harder to understand.
Showing 1 – 10 of 215 MCQ Questions | Page 1 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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