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When the observer moves towards the stat...

When the observer moves towards the stationary source with velocity, `'V_1'`, the apparent frequency of emitted note is `‘F_1'`. When the observer moves away from the source with velocity `‘V_1’`, the apparent frequency is `'F_2'`. If 'V' is the velocity ofsound in air and `frac(F_1)(F_2)=2` then `frac(V)(V_1)=` ?

A

2

B

3

C

4

D

5

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