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 is:

Electromagnetic Waves: JEE Main 2023 Physics question

JEE Main 2023 · 30 Jan, Evening shift · Q6803

JEE Main 202330 Jan, Evening shiftPhysicsMediumElectromagnetic Waves120× since 2002

A point source of

100 \mathrm{~W}

emits light with

5 \%

efficiency. At a distance of

5 \mathrm{~m}

from the source, the intensity produced by the electric field component is: