Physics · 2023
JEE Main · 30 January 2023, Shift 2 · Q15
A point source of 100 W emits light with 5 % efficiency. At a distance of 5 m from the source, the intensity produced by the electric field component…
A point source of $\displaystyle 100$ W emits light with $\displaystyle 5 \%$ efficiency. At a distance of $\displaystyle 5$ m from the source, the intensity produced by the electric field component is:
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle \frac{1}{40 \pi} \frac{W}{m^2}$
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JEE Main 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.