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

Answer

A

Explanation

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