Optics Question 150
Question: The periodic time of rotation of a certain star is 22 days and its radius is 7 ’ 108 metres. If the wavelength of light emitted by its surface be , the Doppler shift will be (1 day = 86400 sec)
[MP PET 2001]
Options:
A)
B)
C)
D)
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Answer:
Correct Answer: A