The frequency changes by `10%` as the source approaches a stationary observer with constant speed `v_S`, What sould be the perce

The frequency changes by `10%` as the source approaches a stationary observer with constant speed `v_S`, What sould be the percentage change in ferquency as the source recedes from the observer with the same speed? Given that `v_Sltltv` (v speed of sound in air).
A. 0.143
B. 0.2
C. 0.167
D. 0.1

The frequency changes by `10%` as the source approaches a stationary observer with constant speed `v_S`, What sould be the percentage change in ferque

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