An observer starts moving with unifrom acceleration a towards a stationary sound soure of frequency `f_(o)`. As the observer approaches the source ,the apparent frequency f heard by the observer varies with time t as

An observer starts moving with uniform acceleration ‘a’ towards a stationary sound source emitting a whistle of frequency ‘n\ As the observer approaches source, the apparent frequency heard by the observer varies with time as

An observer starts moving with uniform acceleration a towards a stationary sound source emitting a whistle of frequency n . As the observer approaches source, the apparent frequency, head by the observer varies with time as

A sound source has frequency f. Source and observer both have same speed.For the apparent frequency observed by observer match the following.

A sound source has frequency f. Source and observer both have same speed.For the apparent frequency observed by observer match the following.

If an observer is moving with uniform velocity v to wards a stationary source of frequency n, and if the velocity of sound in the medium is V, then the apparent change in the frequency of the sound, heard by the observer, is -

A source of sound is moving with a velocity of 50 ms ^(-1) towards a stationary observer.The observer measures the frequency of sound as 500 Hz.The apparent frequency of sound as heard by the observer when source is moving away from him with the same speed is (Speed of sound at room temperature 350 ms ^(-1)

An observer moves with a constant acceleration towards a fixed source and start decelerating as soon as it passes the sound source. The variation of frequency f by observer with time t is best shown by