GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the apparent change in frequency of electromagnetic or sound waves caused by the relative motions of the source and the observer?
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Doppler effect
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Microwaves
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Speed of light
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Infrared
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Explanation:
Detailed explanation-1: -The apparent change in frequency of sound due to the relative motion between the observer and the source of sound is called doppler effect.
Detailed explanation-2: -The Doppler effect describes the change in the observed frequency of a wave when there is relative motion between the wave source and the observer. It was first proposed in 1842 by Austrian mathematician and physicist Christian Johann Doppler.
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