A source of sound of frequency 256 Hz is rotating in a circle of radius 3 m with angular speed of 20 rad/s. A listener is standing at rest along the line of centre of the circle. Under which position of the source of sound the listener will hear sound of
(a) maximum frequency
(b) minimum frequency
(c) same frequency as the frequency of source.

Explanation

To solve the problem, we need to analyze the situation using the Doppler effect, which describes how the frequency of sound changes due to the relative motion between the source and the observer.

### Given Data:
- Frequency of the source (f₀) = 256 Hz
- Radius of the circle (r) = 3 m
- Angular speed (ω) = 20 rad/s
- Speed of sound (v) = 340 m/s (approximate value)

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