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prove that the apparent frequency becomes double that the actual frequency when an observer approaches a stationary source with velocity of sound

prove that the apparent frequency becomes double  that the actual frequency when an observer approaches a stationary source with velocity of sound 

Grade:12th pass

1 Answers

darshan kumar
30 Points
3 years ago
Let actual frequency be f and speed of sound be v . Since observer is moving towards the source producing sound therefore apparent frequency will be greater so we will add velocity of observer in numerator So apparent frequency = [(v+v)/(v+0)] fSo apparent frequency = 2f

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