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