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A musician using and open flute of leng...

A musician using and open flute of length 50 cm produces second harmonic sound waves. A person runs towards the musician from another end of a hall at a speed of 10 km/h. If the wave speed is 330 m/s, the frequency heard by the running person shall be close to :

A

333Hz

B

753Hz

C

666H2

D

500Hz

Text Solution

Verified by Experts

The correct Answer is:
C
`f=V/L = (330)/(1//2)= 660 `
`V_0 = 10 km//h = 25//9 m//s`
`f.=f((V+V_0)/(V))=660 ((330+25)/(330))=665.55~~666Hz`
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