GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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As light moves away from us, the frequency
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Increases
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Decreases
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Stays the same
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None of the above
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Explanation:
Detailed explanation-1: -If a star is traveling towards us, its light will appear blueshifted, and if it is traveling away the light will be redshifted. This shift in color will not change the apparent color of the star enough to be seen with the naked eye.
Detailed explanation-2: -A shorter wavelength will have a higher frequency. So, if the source is moving towards you, the frequency of the waves will be higher. If you are standing on the left, just the opposite is true: the waves are spread out, so the wavelength is longer, and the frequency is lower.
Detailed explanation-3: -If the observer is moving away from the stationary source, the observed frequency is lower than the source frequency.
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