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.
81
An anchored boat is rocked by waves whose consecutive crests are 125 m apart. The wave speed is 25 m/s. What is the rocking frequency?
RRB ALP & Technician
29/08/2018 (Shift-III)
2018
✓ Answer:A0.20 Hz
The crest spacing is the wavelength. f = v/λ = 25/125 = 0.20 Hz.
82
Which quantity does not describe the nature of a wave?
RRB Group-D
05/11/2018 (Shift-III)
2018
✓ Answer:AHeight
The source selects height. This wording is imprecise because wave height can describe some waves; wavelength, speed and frequency are standard general wave parameters.
83
A wave travels at 500 m/s and has frequency 20 Hz. What is its time period?
RRB Group-D
05/10/2018 (Shift-II)
2018
✓ Answer:C0.05 s
T = 1/f = 1/20 = 0.05 s. The wave speed is not needed.
84
Which waves are used to penetrate objects for imaging in hospitals and at airports?
RRB NTPC (Stage-I)
12/04/2016 (Shift-II)
2016
✓ Answer:BX-rays
The specific intended answer is X-rays, used in radiographic imaging and baggage inspection. Option C is broader and includes X-rays.
85
What are infrared rays?
RRB NTPC (Stage-I)
05/04/2016 (Shift-III)
2016
✓ Answer:DElectromagnetic waves
The source selects electromagnetic waves. Infrared radiation is electromagnetic and is also transverse in free space, so option B is also a valid property.
86
The distance between two consecutive crests is L. What is the wavelength?
RRB Group-D
24/09/2018 (Shift-I)
2018
✓ Answer:DL
Consecutive crests are one wavelength apart, so λ = L.
87
Which electromagnetic radiation has the shortest wavelength among these options?
RRB NTPC (Stage-I)
03/04/2016 (Shift-III)
2016
✓ Answer:DGamma rays
In the conventional electromagnetic spectrum ordering, gamma rays occupy the shortest-wavelength end.
88
If a wave completes 40 vibrations in 2.5 s, what is its frequency?
RRB Group-D
17/09/2018 (Shift-III)
2018
✓ Answer:A16 Hz
f = number of vibrations/time = 40/2.5 = 16 Hz.
89
Which harmful radiation is emitted by the Sun?
RRB Group-D
25/09/2018 (Shift-I)
2018
✓ Answer:BUV radiation
The intended answer is ultraviolet radiation, which is the harmful solar radiation highlighted in the source.
90
Wave speed, amplitude, wavelength and frequency are called:
RRB Group-D
15/11/2018 (Shift-I)
2018
✓ Answer:BCharacteristics of a wave
These physical parameters describe the characteristics of a wave.
Showing 81 – 90 of 215 MCQ Questions | Page 9 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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