Question
Question: Assuming that universe is expanding, if the spectrum of light coming from a star which is going away...
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
Answer
The spectrum will move to infrared region
Explanation
Solution
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.