If emissivity of bodies X and Y are e_(x) and e_(y) and absorptive power are A_(x) and A_(y) then

If emissivity of bodies X and Y are e_(x) and e_(y) and absorptive pow

1.	If emissivity of bodies X and Y are e_(x) and e_(y) and absorptive power are A_(x) and A_(y) then
Answer» `e_(y) gt e_(x)` , `A_(y) gt A_(x)` `e_(y) LT e_(x)` , `A_(y) lt A_(x)` `e_(y) gt e_(x)` , `A_(y) lt A_(x)` `e_(y) = e_(x)` , `A_(y) = A_(x)` Solution :`(A)` The graph shows that the the same temperature difference `(T_(2)-T_(1))`, less is TAKEN for `x`. This means the EMISSIVITY is more for `x`. According to Kirchoff's law, a GOOD emitter is a good absorber as well.