# Doppler's Effect in Sound waves.

**Classical Mechanics**Level 5

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