A stationary source emits sound of frequency 1200 Hz. If would blows at the speed of 0.1 v. deduce
(a) The change in the frequency for a stationary observer on the wind side of the source
(b) Report the calculations for the case when there is no wind but the observer moves at 0.1 v speed towards the source (Given : velocity of sound = v)

Explanation

To solve the problem, we will break it down into two parts as stated in the question.

### Part (a): Change in frequency for a stationary observer on the wind side of the source

1. **Identify the given values**:
- Frequency of the source, \( f_0 = 1200 \, \text{Hz} \)
- Speed of wind, \( v_w = 0.1v \) (where \( v \) is the speed of sound)
- Velocity of the source, \( v_s = 0 \)
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