Physics - Sound Wave Question with Solution | TestHub

Correct option is A) By using $n^{\prime }=n\left(\frac{v}{v-v_s}\right)$ $2\mathrm{n}=\mathrm{n}\left(\frac{\mathrm{v}-{\mathrm{v}}_0}{\mathrm{v}-0}\right)$ $\Rightarrow {\mathrm{v}}_0=-\mathrm{v}=-($ Speed of sound $)$ Negative sign indicates that observer is moving opposite to the direction of velocity of sound, as shown