1.

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 (e) and absorptivity (a) of the two bodies [IIT-JEE (Screening) 2003]

A.            \[{{e}_{x}}>{{e}_{y}}\And \,\,\,{{a}_{x}}<{{a}_{y}}\]
B.            \[{{e}_{x}}<{{e}_{y}}\And \,\,\,{{a}_{x}}>{{a}_{y}}\]
C.            \[{{e}_{x}}>{{e}_{y}}\And \,\,\,{{a}_{x}}>{{a}_{y}}\]
D.            \[{{e}_{x}}<{{e}_{y}}\And \,\,\,{{a}_{x}}<{{a}_{y}}\]
Answer» D.            \[{{e}_{x}}<{{e}_{y}}\And \,\,\,{{a}_{x}}<{{a}_{y}}\]


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