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Two train whistles A and B each have a f...

Two train whistles A and B each have a frequency of 220 Hz. A is stationary and B is moving toward the right (away from A) at a speed of `35 m//s` . A listener between the two trains is moving towards the right with a speed of `15 m//s` . No wind is blowing.
What is the frequency from B as heard by the listener?

Text Solution

Verified by Experts

`n_(A) =n_(B) = 220 Hz`
Apparent frequency as heard from B
`= 220 ((330 + 15)/(330 + 35)) = 208 Hz`
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