When a source of frequency f_(0) moves away from a stationary observer with a certain velocity, an apparent frequency f' is observed. When it moves with the same speed towards the observer, the observed frequecy is 1.2 f'. If the velocityof sound is v, then the acutual frequency f_(0) is

When a source of frequency f_(0) moves away from a stationary observer

1.	When a source of frequency f_(0) moves away from a stationary observer with a certain velocity, an apparent frequency f' is observed. When it moves with the same speed towards the observer, the observed frequecy is 1.2 f'. If the velocityof sound is v, then the acutual frequency f_(0) is
Answer» `12/11 F'` `11/12 f'` `7/6 f'` `6/7 f'` ANSWER :A

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When a source of frequency f_(0) moves away from a stationary observer with a certain velocity, an apparent frequency f' is observed. When it moves with the same speed towards the observer, the observed frequecy is 1.2 f'. If the velocityof sound is v, then the acutual frequency f_(0) is

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