The graph, shown in the adjacent diagram, represents the variation of temperature (T) of two bodies, x and y having same surface area, with time (t) due to the emission of radiation. Find the correct relation between the emissivity and absorptivity power of the two bodies

Options

A. `e_(x) gt e_(y) "and" a_(x) lt a_(y)`
B. `e_(x) lt e_(y) "and" a_(x) gt a_(y)`
C. `e_(x) gt e_(y) "and" a_(x) gt a_(y)`
D. `e_(x) lt e_(y) "and" a_(x) lt a_(y)`

Answer

D

Explanation

For same temperature difference less time is taken for x, this means `e_(x) gt e_(y)`.
According to Kirchoff's law `a_(x) gt a_(y)`