waves

Question: A source and an observer approach each other with same velocity $50 m/s$. If the apparent frequency is $435 sec^{–1}$, then the real frequency is



1) $320 s^{–1}$
2) $360 sec^{–1}$
3) $390 sec^{–1}$
4) $420 sec^{–1}$
Solution: Explanation: No Explanation
Doppler Effect

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