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PLEASE REFER TO THE ATTACHMENT ☺️
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Answer:
FREQUENCY OF RADIO SIGNAL:- 5000MHz
FREQUENCY OF ECHO:- 100kHz
SPEED OF LIGHT :- C ~ 3*10^8
LET RELATIVE VELOCITY :- v
A.T.Q
[tex] \frac{100}{5000000} = 2\frac{v}{c} [/tex]
[tex] \frac{3 \times {10}^{8} }{5 \times {10}^{4} \times 2 } = v[/tex]
[tex]v = 3 \times {10}^{3} m {s}^{ - 1} [/tex]
Hope it Helps