If the source moves,the wavelength of the sound in front of the direction of motion is smaller than the wavelength behind the direction of motion.

Question

Quizplus · Accepted Answer

This is due to the Doppler effect, which causes a shift in the perceived frequency and wavelength of sound waves as the source of the waves moves relative to the observer. As the source moves towards the observer, the perceived frequency increases and the wavelength becomes shorter, and as the source moves away from the observer, the perceived frequency decreases and the wavelength becomes longer.

If the Source Moves,the Wavelength of the Sound in Front