question_answer

At temperature T, the emissive power and absorption power of a body for certain wavelength are \[{{e}_{1}}\], and \[{{a}_{1}}\] respectively, then

A)  \[{{e}_{1}}={{a}_{1}}\]

B) \[{{e}_{1}}>{{a}_{1}}\]         

C) \[{{e}_{1}}<{{a}_{1}}\]

D)   there will not be any definite relation between \[{{e}_{1}}\] and \[{{a}_{1}}\]