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An observer moves towards a stationary source of sound with a speed `1/5`th of the speed of sound. The wavelength and frequency of the source emited are `lamda` and f, respectively. The apparent frequency and wavelength recorded by the observer are, respectively-
(a) `f,1.2 lambda` (b) `0.8f,0.8lambda` (c) `1.2f,1.2lambda` (d) `1.2f,lambda`

A

1.2f,`1.2` lambda

B

`1.2f, lambda `

C

f,`1.2 lambda `

D

0.8f , `0.8` lambda

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The correct Answer is:
B
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