Assertion : Good absorbers of radiation are weak emitters. Reason : Ratoi of emissivity and absorptivity is constant for all substances at any temperature for same wavelength radiation.

Assertion : Good absorbers of radiation are weak emitters. Reason : R

1.	Assertion : Good absorbers of radiation are weak emitters. Reason : Ratoi of emissivity and absorptivity is constant for all substances at any temperature for same wavelength radiation.
Answer» Both are true and the reason is the CORRECT explanation of the ASSERTION. Both are true but the reason is not correct explanation of the assertion. Assertion is true, but the reason is FALSE. Both assertion and reason are false. SOLUTION :Assertion is correct according to Kirchhoff.s law. And `a=e`, then `(a)/(e)=` constant. Hence, reason is correct explanation of assertion.