Which of the following is the `v_(m)` = T graph for a perfectly black body ( `v_(m)` =maximum frequency of radiation)

Options

A. A
B. B
C. C
D. D

Answer

C

Explanation

According to Wien's displacement law
`gamma_(m) T = b` where b is the Wien's constant.
in terms of frequency, `(c )/(upsilon_(m)) T = b` or `upsilon_(m) = c/b T`
Hence, the `upsilon - T` graph is a straight line.