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in Physics by (122k points)
A source of sound is approaching an observer with speed of 30 m/s and the observer is approaching the source with a speed 60 m/s. Then the fractional change in the frequency of sound in air (330 m/s) is
A. `(1)/(3)`
B. `(2)/(5)`
C. `(2)/(2)`
D. `(3)/(10)`

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1 Answer

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by (122k points)
Correct Answer - D

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