Sun light falls normally on a surface of area 36 {\cm}^2 and exerts an average force of 7.2 \times 10^{-9} {\N} within a time period of 20 minutes. Considering a case of complete absorption, the energy flux of incident light is [28-Jul-2022-Shift-2]

Correct Answer is : 0.06W∕cm2

25.92 \times 10^2 {\W} \/ {\cm}^2

8.64 \times 10^{-6} {\W} \/ {\cm}^2

Electromagnetic Waves Part 1

Section: Physics

Question : 6 of 100

Marks: +1, -0

Sun light falls normally on a surface of area 36cm2 and exerts an average force of 7.2×10−9N within a time period of 20 minutes. Considering a case of complete absorption, the energy flux of incident light is

[28-Jul-2022-Shift-2]

25.92×102W∕cm2
8.64×10−6W∕cm2
6.0W∕cm2
0.06W∕cm2

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