Physics · Electromagnetism
A plane electromagnetic wave with an electric field vector EI cos(kzz + ωt) î is incident normally on a perfectly reflecting mirror in vacuum located at z = 0. If the permittivity of free space is ε0, the time-averaged force exerted on an area A of the mirror is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Aε0|EI|2 ẑ
- 2-Aε02|EI|2 ẑ
- 3Aε02|EI|2 ẑ
- 4-Aε0|EI|2 ẑ✓
Correct answer
-Aε0|EI|2 ẑ
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