Physics · 2010
NEET 2010 · Prelims · Code A · Q16
The total radiant energy per unit area, normal to the direction of incidence, received at a distance R from the centre of a star of radius r, whose…
The total radiant energy per unit area, normal to the direction of incidence, received at a distance $\displaystyle R$ from the centre of a star of radius $\displaystyle r$, whose outer surface radiates as a black body at a temperature T K is given by :
(Where $\displaystyle \sigma$ is Stefan's Constant)
Official answer
(2)
$\displaystyle \sigma r^2 \mathrm{~T}^4 / \mathrm{R}^2$
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NEET (UG) 2010 Physics question, with the answer from NTA’s final answer key. Where our answers come from.