When a train approaches a stationary observer, the apparent frequency of the whistle is `n'` and when the same train recedes away from the observer, the apparent frequency is `n"`. Then the apperent frquency `n` when the observer sitting in the train is :

If the source is moving away from the observer, then the apparent frequency …………..

When the source is moving towards the stationary observer, the apparent frequency is given by

When a train is approaching the stationary observer, the apparent frequency of the whistle observed as 100 Hz, while when it has passed away from the observer with same speed, it is 50 Hz. Calculate the frequency of the whistle when the observer moves with the train (V = 330 m/s)

When a train is approaching the observer, the frequency of the whistle is 100 cps while when it has passed the observer, it is 50 cps. Calculate the frequency when the observer' moves with the trail.

When a train is approaching the observer, the frequency of the whistle is 100 cps. When it has passed observer, it is 50 cps. Calculate the frequncy when the observer moves with the train.

When a train is approaching the observer, the frequency of the whistle is 100 cps. When it has passed observer, it is 50 cps. Calculate the frequncy when the observer moves with the train.