The surface temperature at the sun which has maximum energy emission at 500 nm is 6000 K. The temperature of a star which has maximum energy emission at 400 nm will be

Options

A. 8500 K
B. 4500 K
C. 7500 K
D. 6500 K

Answer

C

Explanation

By Wien's displacement law, lambda_(m)T = constant.
`therefore lambda_(m)T = lambda'_(m)T'` or `500 xx 6000 = 400 xx T'`
or `T' = (500 xx 6000)/(400) = 7500 K`.