Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET Medical202622 April 2026Evening ShiftPhysicsWaves and SoundActual

In the context of the Doppler effect in sound, which statement is true regarding the wave speed in the medium?

Options

  1. AThe speed of sound increases if the source moves towards the observer.
  2. BThe speed of sound decreases if the source moves away from the observer
  3. CThe speed of sound remains the same regardless of the relative motion between the source and observer.
  4. DThe speed of sound changes based on the observer's velocity.

Correct answer

C. The speed of sound remains the same regardless of the relative motion between the source and observer.

Step-by-step solution

The speed of sound in a medium is a property of the medium itself, depending on factors such as elasticity, density, and temperature. It does not depend on the motion of the sound source or the observer. The Doppler effect involves a change in the observed frequency and wavelength due to relative motion, but the wave speed relative to the medium remains constant. Answer: The speed of sound remains the same regardless of the relative motion between the source and observer.

Practice Waves and Sound on Quantrex Academy →

More from Waves and Sound

For the given wave equation y = 10 ( x 4 + t 2 ) , the CORRECT statement is ( where x is in metre and time t is in second.) 2026The source is emitting sound of frequency 'n'. A source and a listener both are moving towards each other with a speed equal to ( V 3 ) , where V is the speed of sound. The frequen 2026Two uniform strings X and Y made of same material made to vibrate under same tension. If the second overtone of string X is equal to the third overtone of string Y and the radius o 2026A simple harmonic progressive wave is represented as Y = 0.04 (2t - 0.02x) m. At a given instant of time, the phase difference between two particles 10 m apart is (in radian) 2026Two waves having same amplitude A , angular frequency and propagation constant k , traveling in opposite directions, have a phase difference of 60^ . If they interfere with each ot 2026Identify the CORRECT statement on beats (A) The amplitude of beats is always constant. (B) Beats are produced when two waves have the same frequency. (C) Beat frequency is the aver 2026An organ pipe closed at one end produces 5^ th overtone of an air column. It is found that air in the pipe is vibrating with x nodes and y antinodes. The value of x and y is 2026The speed of the transverse wave on the stretched string under tension T₁ is v₁ . If the tension in the string is increased by T₁ , the speed of the transverse wave is v₂ . If is t 2026 Full Waves and Sound list All MHT CET Medical PYQs