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A sound wave of frequency f travels hori...

A sound wave of frequency `f` travels horizontally to the right . It is teflected from a larger vertical plane surface moving to left with a speed `v`. the speed of sound in medium is `c`
(a) The number of waves striking the surface per second is `f(c + upsilon)/(c)`
(b) The wavelength of reflected wave is `(c(c-upsilon))/(f(c+upsilon))`
(c) The frequency of the reflected wave is ` f((c+upsilon))/((c+upsilon))`
(d) The number of beats heard by a stationary listener to the left of the reflecting surface is `(upsilon f)/(c - upsilon)`

A

The frequency of the reflected wave is `(f(c+v))/(c-v)`

B

The wave length of the reflected wave is `(c(c-v))/(f(c+v))`

C

The number of waves striking the surface per second is `(f(c+v))/c`

D

The number of beats heard by a stationary listener to the left of the reflecting surface is `(fv)/(c-v)`

Text Solution

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The correct Answer is:
A, B, C
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