Question

a source of sound is travelling towards stationary observer. The freqency of sound heard by the observeris 25% more than that of the actual freqency if speed of sound is V, that of the source is

• A. $\frac{V}{5}$
• B. $\frac{V}{4}$
• C. $\frac{V}{3}$
• D. $\frac{V}{2}$

Answer 1

Answer: (A)

$\frac{V}{5}$

Answer 2

$n^1 = \left[ \frac{V}{V - V} \right] n$