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BITSAT Waves and Sound PYQs with Solutions

30 previous year questions from Waves and Sound (BITSAT Physics) with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

30 questionsPhysics2009–2024Answers + solutions

About Waves and Sound PYQs

Waves and Sound has 30 previous year questions in the Quantrex Academy BITSAT Physics bank. The 30 questions in this list come from BITSAT (30), spanning 2009 to 2024. Each question opens on its own page with the options, the correct answer and the worked solution where available.

BITSAT Waves and Sound PYQs with Solutions

About Waves and Sound PYQs

Questions by year (this list)

Waves and Sound questions with solutions

The speed of sound in oxygen at S.T.P. will be approximately: (Given, .R=8.3 JK^ -1 , γ=1.4)

A plane progressive wave is given by y=2 2 π(330 t-x) m . The frequency of the wave is:

The engine of a train moving with speed 10 ms^ -1 towards a platform sounds a whistle at frequency 400 Hz . The frequency heard by a passenger inside the train is (neglect air

The ratio of speed of sound in hydrogen gas to the speed of sound in oxygen gas at the same temperature is:

A submarine A travelling at 17 m / s is being chased along the line of its velocity by another submarine B travelling at 34 m / s . B sends a sonar signal of 600 Hz to detect A

Transverse waves of the same frequency are generated in two steel wires A and B . The diameter of A is twice that of B and the tension in A is half that in B . The ratio of the

A direct current of 6 A is superimposed on an alternating current I=10 ω t flowing through a wire. The effective value of the resulting current will be

The frequency of whistle of an engine appears to be (4 / 5)^ th of initial frequency when it crosses a stationary observer. If the velocity of sound is 330 m / s , then the speed

The displacement y of a particle in a medium can be expressed as, y=10^ -6 (100 t+20 x+(π)/(4)) m where t is in second and x in meter. The speed of the wave is

An organ pipe, open from both end produces 5 beats per second when vibrated with a source of frequency 200 Hz . The second harmonic of the same pipes produces 10 beats per second

A whistle of frequency 1000 Hz is sounded on a car travelling towards a cliff with velocity of 18 m s^ -1 normal to the cliff. If c=330 m s^ -1 , then the apparent frequency of

Two sources of sound A and B are moving towards and away from a stationary observer with the same speed respectively. If the frequency of the sound produced by both the sources is

If sound travels in air with the speed of 340ms^ - 1 , then the number of tones present in an open organ pipe of length 2m for a& maximum frequency of 1200 Hz, are

A train moves towards a stationary observer with speed 34ms^ - 1 . The train blows whistle and its frequency is registered by the observer as &#957; _ 1 . If the train&#39;s speed

A whistle of frequency 500 Hz tied to the end of a string of length 1. 2m revolves at 400rev ^ - 1 . A listener standing some distance away in the plane of rotation of whistle

A transverse wave propagating on a stretched string of linear density 3 × 10 ^ - 4 kgm ^ - 1 is represented by the equation y = 0. 2sin ( 1. 5x + 60t ) where, x in metres and t is

A string of length ℓ is fixed at both ends. It is vibrating in its 3^ rd overtone with maximum amplitude'a'. The amplitude at a distance ℓ / 3 from one end is

A source of sound S emitting waves of frequency 100 Hz and an observor O are located at some distance from each other. The source is moving with a speed of 19.4 ms^ -1 at an angle

Two tuning forks with natural frequencies 340 Hz each move relative to a stationary observer. One fork moves away from the observer, while the other moves towards the observer at

The frequency of a sonometer wire is 100 Hz . When the weights producing the tensions are completely immersed in water, the frequency becomes 80 Hz and on immersing the weights in

A sound source, emitting sound of constant frequency, moves with a constant speed and crosses a stationary observer. The frequency (n) of sound heard by the observer is plotted

When a string is divided into three segments of length l_ 1 , l_ 2 , and l_ 3 , the fundamental frequencies of these three segments are v_ 1 , v_ 2 and v_ 3 respectively. The

Two waves of wavelengths 99 cm and 100 cm both travelling with velocity 396 m / s are made to interfere. The number of beats produced by them per second is

If equation of transverse wave is y=x_ 0 2 π(nt- x λ ). Maximum velocity of particle is twice of wave velocity, if λ is-

The transverse displacement y(x, t) of a wave on a string is given by y(x, t)=e^ -(a x^ 2 +b t^ 2 +2 a b . xt ) This represents a

A sound souorce is moving towards stationary listener with (1)/(10) th of the speed of sound. The ratio of apparent to read frequency is

The fundamental frequency of an open organ pipe is 300 Hz . The first overtone of this pipe has same frequency as first overtone of a closed organ pipe. If speed of sound is 330 m

A wave y=a (ω t-k x) on a string meets with another wave producing a node at x=0. Then the equation of the unknown wave is

A source of sound produces waves of wavelength 60 cm when it is stationary. If the speed of sound in air is 320 m s^ -1 and source moves with speed 20 m s^ -1 , the wavelength of

Two tuning forks A and B sounded together give 6 beats per second. With an air resonance tube closed at one end, the two forks give resonance when the two air columns are 24 cm

Related BITSAT Physics chapters

Waves and Sound in other exams

A train moves towards a stationary observer with speed 34ms^ - 1 . The train blows whistle and its frequency is registered by the observer as ν _ 1 . If the train's speed