Questions
A plane electromagnetic wave of wave intensity 6 W/ strikes a small mirror area 40 c, held perpendicular to the approaching wave. The momentum transferred by the wave to the mirror each second will be
detailed solution
Correct option is D
Momentum transferred in one second p=2Uc=2SavAc=2×6×40×10−43×108=1.6×10−10kg-m/s2.Talk to our academic expert!
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A plane em wave of wave intensity of 10 W/m2 strikes a small mirror of area 20 cm2, held perpendicular to the approaching wave. The radiation force on the mirror will be
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