# Doppler's Effect in Sound waves.

A sound source having frequency 'f ' Hz is moving in a circle with velocity half of the sound velocity in the medium. The Radius of circle is 'R' . An Observer is standing at a distance of 'x' from centre of circle in the same plane. If maximum frequency receive by the observer is equal to 'a' and minimum frequency received by same observer is 'b'

THEN FIND 'a + b'

DETAILS AND ASSUMPTIONS

$$\bullet$$ f=600 Hz

$$\bullet$$ R=10 m

$$\bullet$$ x=5 m

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