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Physics · 2017
JEE Main 2017 · 2017-04-02 Offline · Q13
An observer is moving with half the speed of light towards a stationary microwave source emitting waves at frequency 10 GHz. What is the frequency of…
An observer is moving with half the speed of light towards a stationary microwave source emitting waves at frequency $\displaystyle 10$ GHz. What is the frequency of the microwave measured by the observer ? (speed of light $\displaystyle =3 \times 10^8 \mathrm{~ms}^{-1}$ )
Official answer
(3)
17.$\displaystyle 3$ GHz
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JEE Main 2017 Physics question, with the answer from NTA’s final answer key. Where our answers come from.