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A plane electromagnetic wave of Intensity $4 \frac{W}{m^{2}}$ strikes a small mirror of area $90 c m^{2},$ held perpendicular to the approaching wave. The radiation force on the mirror will be

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detailed solution

Correct option is C

For pure reflective surface, Radiation force = F=2IAC=2×4×90×10−43×108=2.4×10−10N

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A plane electromagnetic wave of Intensity 4Wm2 strikes a small mirror of area 90cm2, held perpendicular to the approaching wave. The radiation force on the mirror will be

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Ready to Test Your Skills?

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A plane electromagnetic wave of Intensity $4 \frac{W}{m^{2}}$ strikes a small mirror of area $90 c m^{2},$ held perpendicular to the approaching wave. The radiation force on the mirror will be