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Question

(A) The formula for the apparent frequency $f$ when the source moves towards a stationary observer is given by $f = f_0 \left( \frac{v}{v - v_s} \righ

Vedclass · Accepted Answer

$10/9$

Vedclass · Answer

(A) The formula for the apparent frequency $f$ when the source moves towards a stationary observer is given by $f = f_0 \left( \frac{v}{v - v_s} \right)$,where $f_0$ is the real frequency,$v$ is the speed of sound,and $v_s$ is the speed of the source.Given that the source speed $v_s = v/10$.Substituting this into the formula:$f = f_0 \left( \frac{v}{v - v/10} \right)$$f = f_0 \left( \frac{v}{9v/10} \right)$$f = f_0 \left( \frac{10}{9} \right)$Therefore,the ratio of apparent frequency to real frequency is $f/f_0 = 10/9$.

$A$ sound source is moving towards a stationary observer with $(1/10)$ of the speed of sound. The ratio of apparent to real frequency is .........

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