M.Sc. Bio-Physics (PU-CET P.G) 2019 Panjab University Entrance Exam With Answers

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23.

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 the microwave measured by the observer? (speed of light=3×108 ms−1)

A: 10.1GHz
B: 12.1GHz
C: 17.3 GHz
D: 15.3GHz

The answer is: C

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