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A rocket is receding away from earth wit...

A rocket is receding away from earth with velocity 0.2C. The rocket emits signal of frequency `4 xx 10^7 Hz` . The apparent frequency of the signal produced by the rocket observed by the observer on earth will be

A

`3 xx 10^(6)` Hz

B

`4 xx 10^(6)` Hz

C

`2.4 xx 10^(7)` Hz

D

`3.33 xx 10^(7)` Hz

Text Solution

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The correct Answer is:
D
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