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JEE Mains · Physics · STD 12 - 11. Dual nature of radiation and matter
\(50\, W/m^2\) energy density of sunlight is normally incident on the surface of a solar panel. Some part of incident energy \((25\%)\) is reflected from the surface and the rest is absorbed. The force exerted on \(1\, m^2\) surface area will be close to \((c = 3 \times10^8\, m / s)\)
- A \(15 \times {10^{ - 8}}\,N\)
- B \(35 \times {10^{ - 8}}\,N\)
- C \(10 \times {10^{ - 8}}\,N\)
- D \(20 \times {10^{ - 8}}\,N\)
Answer & Solution
Correct Answer
(D) \(20 \times {10^{ - 8}}\,N\)
Step-by-step Solution
Detailed explanation
Radiation pressure for \(100 \%\) reflection \(=\frac{2I}{\mathrm{C}}\) Radiation pressure for \(0 \%\) reflection \(=\frac{I}{\mathrm{C}}\) Hence, in given case, radiation pressure…
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