Assertion : Blue star is at high temperature than red star.
Reason : Wein's displacement law states that `T prop (1//lambda_(m))`.

Options

A. If both the assertion and reason are true and reason is correct explanation of the assertion .
B. If both the assertion and reason are true but reason is not a correct explanation of the assertion .
C. If the assertion is true but the reason is false.
D. If both assertion and reason are false.

Answer

A

Explanation

From Wien's displacement law , temperature `(T) prop 1//lambda_(m)` ( where ` lambda_(m)` is the maximum wavelength). Thus temperature of a body is inversely proportional to the wavelength and red star has maximum wavelength , therefore blue star is at higher temperature then red star .