A sound source is moving towards a stationary | vedclass

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Question

(A) According to the Doppler effect,when a source moves towards a stationary observer,the apparent frequency $n'$ is given by the formula:$n' = n \lef

Vedclass · Accepted Answer

$10/9$

Vedclass · Answer

(A) According to the Doppler effect,when a source moves towards a stationary observer,the apparent frequency $n'$ is given by the formula:$n' = n \left( \frac{v}{v - v_S} \right)$where $n$ is the real frequency,$v$ is the speed of sound,and $v_S$ is the speed of the source.Given that the source is moving with $1/10$ of the speed of sound,we have $v_S = v/10$.Substituting this into the formula:$n' = n \left( \frac{v}{v - v/10} \right)$$n' = n \left( \frac{v}{9v/10} \right)$$n' = n \left( \frac{10}{9} \right)$Therefore,the ratio of apparent to real frequency is $\frac{n'}{n} = \frac{10}{9}$.

$A$ 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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