Home Physics Wave Optics Doppler's Effect of Light Assuming that universe is expanding, if the …
Physics Wave Optics Doppler's Effect of Light MCQ (Single Correct)

Assuming that universe is expanding, if the spectrum of light coming from a star which is going away from earth is tested, then in the wavelength of light

A
There will be no change
B
The spectrum will move to infrared region
C
The spectrum will seems to shift to ultraviolet side
D
None of the above

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The correct answer is:
B

Due to expansion of universe, the star will go away from the earth thereby increasing the observed wavelength. Therefore the spectrum will shift to the infrared region.

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