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Electromagnetic Waves question

2021 · 17 Mar · Shift 1 · Q70

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JEE Main
Physics
Electromagnetic Waves
2021 · 17 Mar · Shift 1 · Q70

Electromagnetic Waves question

2021 · 17 Mar · Shift 1 · Q70

JEE MainPhysicsElectromagnetic WavesNumerical+4 / −1

If 2.5

\times

10

-

6 N average force is exerted by a light wave on a non-reflecting surface of 30 cm2 area during 40 minutes of time span, the energy flux of light just before it falls on the surface is

\underline{\hspace{2cm}}

W/cm2. (Round off to the Nearest Integer) (Assume complete absorption and normal incidence conditions are there)

Numerical answer

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