BITSAT SERIES Physics
Sound
10 previous year questions.
Volume: 10 Ques
Yield: Medium
High-Yield Trend
1
2023 1
2019 2
2018 1
2017 1
2015 1
2011 3
2005 Chapter Questions 10 MCQs
01
PYQ 2005
medium
physics ID: bitsat-2
The disc of a siren containing holes rotates at a constant speed of . The emitted sound is in unison with a tuning fork of frequency :
1
10 Hz
2
360 Hz
3
216 Hz
4
60 Hz
02
PYQ 2005
medium
physics ID: bitsat-2
In an experiment with sonometer a tuning fork of frequency resonates with a length of and another tuning fork resonates with a length of . Tension of the string remaining constant the frequency of the second tuning fork is :
1
163.84 Hz
2
400 Hz
3
320 Hz
4
204.8 Hz
03
PYQ 2005
medium
physics ID: bitsat-2
The ratio of velocity of sound in hydrogen and oxygen at STP is :
1
16:01
2
8:01
3
4:01
4
2:01
04
PYQ 2011
medium
physics ID: bitsat-2
The fundamental frequency of an open organ pipe is 300 Hz. The first overtone of this pipe has the same frequency as the first overtone of a closed organ pipe. If the speed of sound is 330 m/s, then the length of the closed organ pipe is:
1
41 cm
2
37 cm
3
31 cm
4
80 cm
05
PYQ 2015
medium
physics ID: bitsat-2
Two tuning forks with natural frequencies each move relative to a stationary observer.
One fork moves away from the observer, while the other moves towards the observer at the same speed. The observer hears beats of frequency . Find the speed of the tuning forks.
1
1.5 m/s
2
2 m/s
3
1 m/s
4
2.5 m/s
06
PYQ 2017
medium
physics ID: bitsat-2
A tuning fork of frequency 392 Hz resonates with 50 cm length of a string under tension T. If the mass of the string is decreased by 2%, keeping the tension constant, the number of beats heard when the string and the tuning fork are made to vibrate simultaneously is
1
4
2
6
3
8
4
12
07
PYQ 2018
medium
physics ID: bitsat-2
Ten tuning forks are arranged in increasing order of frequency such that any two nearest tuning forks produce 4 beats/s. The highest frequency is twice of the lowest. The possible highest and lowest frequencies (in Hz) are:
1
80 and 40
2
100 and 50
3
44 and 22
4
72 and 36
08
PYQ 2018
medium
physics ID: bitsat-2
The wavelengths of two waves are 50cm and 51cm respectively. If the temperature of the room is 20^∘C, then what will be the number of beats produced per second by these waves, when the speed of sound at 0^∘C is 332m/s?
1
24
2
14
3
10
4
None of these
09
PYQ 2019
medium
physics ID: bitsat-2
The frequency of a sonometer wire is 100Hz. When the weights producing the tension are completely immersed in water, the frequency becomes 80Hz and on immersing the weights in a certain liquid, the frequency becomes 60Hz. The specific gravity of the liquid is
1
2
3
4
1.21
10
PYQ 2023
medium
physics ID: bitsat-2
The ratio of the speed of sound in hydrogen gas to the speed of sound in oxygen gas at the same temperature is:
1
2
3
4
About Sound - BITSAT
Sound is a vital chapter for BITSAT aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
Frequently Asked Questions
Why focus on Sound PYQs?
Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.
How to best use this analysis?
Review the topic breakdown to see which sub-topics within Sound carry the most weight. Then, tackle the questions iteratively to solidify your understanding.