Questions
The colour of a star indicates its
a
temperature
b
velocity
c
size
d
length
detailed solution
Correct option is A
From Wien's displacement law, we haveλmT = constantwhere λm is maximum wavelength, T is absolute temperature. That means, as the temperature of the black body rises, the maximum energy emitted shifts towards shorter wavelength. Hence, star appearing reddish has the lowest temperature and that appearing bluish has the highest temperature.Talk to our academic expert!
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