The change in frequency due to Doppler effect does not depend on
(A) the separation between source and observer
(B) the speed of the source
(C) the speed of the observer
(D) the frequency of the source

The correct answer is:
(A) the separation between source and observer

Explanation:

The Doppler effect refers to the change in frequency (or pitch) of a wave in relation to an observer moving relative to the source of the wave.

The change in frequency depends on:

  • The speed of the source (Option B)
  • The speed of the observer (Option C)
  • The original frequency of the source (Option D)

But it does not depend on the distance (separation) between the source and the observer at any instant (Option A), as long as they are in relative motion. Only their relative velocity matters.

Hence, Option A is correct.

Published by Pragyanxetu

One Earth. One Future

Leave a Comment or Write your Answer here