Optics Question 248

Question: If a source of light is moving away from a stationary observer, then the frequency of light wave appears to change because of

[AFMC 1995]

Options:

A) Doppler’s effect

B) Interference

C) Diffraction

D) None of these

Show Answer

Answer:

Correct Answer: A

Solution:

According to Doppler’s effect, wherever there is a relative motion between source and observer, the frequency observed is different from that given out by source.



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