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.
21
Which pair of changes will increase both the loudness and the pitch of a sound produced by a guitar string?
RRB Group D
19 Aug, 2026 (4:30 PM - 6:00 PM)
2026
✓ Answer:AIncreasing amplitude and increasing frequency
The correct choice is Increasing amplitude and increasing frequency. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
22
A certain sound wave has a frequency of 400 Hz. What is the time period for this wave?
RRB Group D
12 Aug, 2026 (12:45 PM - 2:15 PM)
2026
✓ Answer:B0.0025 seconds
Time period is T = 1/f = 1/400 = 0.0025 s.
23
A wave has a frequency of 200 Hz and a wavelength of 1.7 m. What does their product represent?
RRB Group D
19 Aug, 2026 (9:00 AM - 10:30 AM)
2026
✓ Answer:BThe speed of the wave
For a wave, the product of frequency and wavelength gives wave speed: v = fλ.
24
If a sound wave has a wavelength of 0.5 m and travels at 250 m/s, what is its frequency?
RRB Group D
09 Aug, 2026 (12:45 PM - 2:15 PM)
2026
✓ Answer:C500 Hz
The correct choice is 500 Hz. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
25
Which of the following changes will most likely reduce the clarity of an echo in a large room?
RRB Group D
14 Aug, 2026 (9:00 AM - 10:30 AM)
2026
✓ Answer:BAdding thick curtains to the walls
The correct choice is Adding thick curtains to the walls. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
26
Which of the following actions would most effectively reduce reverberation in a large auditorium?
RRB Group D
17 Aug, 2026 (9:00 AM - 10:30 AM)
2026
✓ Answer:DInstalling curtains and carpets throughout the space
Excessive reverberation causes successive reflections to overlap, making speech less distinct and harder to understand.
27
Why can you hear a train approaching when you put your ear on the railway track?
RRB Group D
03 Aug, 2026 (12:45 PM - 2:15 PM)
2026
✓ Answer:BSound travels efficiently through solid steel rails to your ear
The correct choice is Sound travels efficiently through solid steel rails to your ear. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
28
A student beats a large drum and blows a high-pitched plastic whistle at the same time. Which property of the sound waves is the main reason why the whistle sounds so different from the drum?
RRB Group D
06 Aug, 2026 (4:30 PM - 6:00 PM)
2026
✓ Answer:DThe frequency of the sound waves is different for each instrument
The correct choice is The frequency of the sound waves is different for each instrument. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
29
Why does touching a vibrating tuning fork to water cause ripples?
RRB Group D
18 Aug, 2026 (4:30 PM - 6:00 PM)
2026
✓ Answer:BVibrations from the fork transfer energy, moving water
A vibrating tuning fork produces longitudinal sound waves in air, consisting of compressions and rarefactions.
30
Why are ultrasound waves used for cleaning delicate objects such as jewelry?
RRB Group D
06 Aug, 2026 (9:00 AM - 10:30 AM)
2026
✓ Answer:AThey cause tiny vibrations that dislodge dirt
The correct choice is They cause tiny vibrations that dislodge dirt. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.
Showing 21 – 30 of 215 MCQ Questions | Page 3 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
![RRB JE Biology [PYQ FREE PDF] Question and Solved Problem with Solution](https://rrbjepyq.in/wp-content/uploads/2026/10/rrb-je-biology-feature-image-300x169.webp)
