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.
31
What is the key reason for ultrasound to be used in cleaning delicate electronic components?
RRB Group D
03 Aug, 2026 (9:00 AM - 10:30 AM)
2026
✓ Answer:DIt removes dirt without causing physical damage
The correct choice is It removes dirt without causing physical damage. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
32
How can ultrasound be used to detect flaws in a metal block?
RRB Group D
04 Aug, 2026 (12:45 PM - 2:15 PM)
2026
✓ Answer:ABy measuring the reflection of waves at internal cracks
The correct choice is By measuring the reflection of waves at internal cracks. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
33
Why does a tightly stretched drum skin make a different sound than a loose one?
RRB Group D
10 Aug, 2026 (4:30 PM - 6:00 PM)
2026
✓ Answer:DA tightly stretched drum skin vibrates faster than a loose one
The correct choice is A tightly stretched drum skin vibrates faster than a loose one. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
34
A sound wave with a frequency of 15 Hz would be best categorized as which type?
RRB Group D
21 Aug, 2026 (12:45 PM - 2:15 PM)
2026
✓ Answer:DInfrasonic sound
The correct choice is Infrasonic sound. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
35
What is the role of a medium in the propagation of sound?
RRB Group D
04 Aug, 2026 (9:00 AM - 10:30 AM)
2026
✓ Answer:AA medium provides particles that carry sound vibrations
The correct choice is A medium provides particles that carry sound vibrations. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
36
Which of the following conditions is necessary to hear an echo clearly?
RRB Group D
17 Aug, 2026 (12:45 PM - 2:15 PM)
2026
✓ Answer:ATime interval must be at least 0.1 s
The correct choice is Time interval must be at least 0.1 s. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
37
How does a stethoscope use the principle of reflection of sound?
RRB Group D
21 Aug, 2026 (4:30 PM - 6:00 PM)
2026
✓ Answer:CThrough multiple reflections within its tube to transmit heartbeat sounds
The correct choice is Through multiple reflections within its tube to transmit heartbeat sounds. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
38
Which of the following statements best explains why striking a bell in a vacuum does NOT produce sound we can hear?
RRB Group D
10 Aug, 2026 (4:30 PM - 6:00 PM)
2026
✓ Answer:ASound needs a medium to travel from the bell to our ears
The correct choice is Sound needs a medium to travel from the bell to our ears. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
39
Which of the following best explains why an echo is heard when a sound is produced near a large, flat wall?
RRB Group D
20 Aug, 2026 (4:30 PM - 6:00 PM)
2026
✓ Answer:DSound waves reflect off the wall and return to the listener after a short delay.
The correct choice is Sound waves reflect off the wall and return to the listener after a short delay.. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
40
Which of the following situations best demonstrates that a vibrating object is necessary for the production of sound?
RRB Group D
25 Aug, 2026 (12:45 PM - 2:15 PM)
2026
✓ Answer:DPlucking a stretched guitar string and hearing a tone
The correct choice is Plucking a stretched guitar string and hearing a tone. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
Showing 31 – 40 of 215 MCQ Questions | Page 4 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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