Answer:
Sound waves require a material medium for their propagation. So the observed frequency of sound when the source moves towards the observer is different from the case when the observer moves towards the source with the same relative velocity. We say that the Doppler effect in sound is asymmetric. On the other hand, no material medium is required for propagation of light waves. So the apparent frequency is same whether the source moves towards the observer or the observer moves towards the source. We say that the Doppler effect in light is symmetric.
You need to login to perform this action.
You will be redirected in
3 sec
