Optics Question 238
Question: 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
Options:
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
Show Answer
Answer:
Correct Answer: B
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.
