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radar sends a radio signal of frequency ...

radar sends a radio signal of frequency `9 xx 10^9` Hz towards an aircraft approaching the radar. If the reflected wave shows a frequency shift of `3 xx 10^3` Hz the speed with wich the aircraft is approaching the radar in `ms^(-1)` (velocity of the rador signal is `3 xx 10^8 ms^(-1)` )

A

150

B

100

C

50

D

25

Text Solution

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The correct Answer is:
C
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