In the above siltuation, bus is at rest blowing horm of frequency `f_(0).` A boy is at rest at some distance. What will be apparent frwuecy of sound, if the air star moving with the speed of 20 m/s from bus towards boy?
A
`ltf_(0)`
B
`gtf_(0)`
C
`=f_(0)`
D
None of these
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The correct Answer is:
C
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