A plane electromagnetic wave of wave intensity 6 W m - 2 stikes a small mirror of the area 40 cm 2 , held perpendicular to the approaching wave. The momentum transferred by the wave to the mirror each second will be

Question

A plane electromagnetic wave of wave intensity 6 W m - 2 stikes a small mirror of the area 40 cm 2 , held perpendicular to the approaching wave. The momentum transferred by the wave to the mirror each second will be, 6 .4 × 10 - 7 kg m s - 1, 4 .8 × 10 - 8 kg m s - 1, 3 .2 × 10 - 9 kg m s - 1, 1 .6 × 10 - 10 kg m s - 1

MARKS App · Accepted Answer

In the case of complete reflection, the momentum transfer by the wave to the mirror in each second will be P = 2 U c = 2 S a v A c = 2 × 6 × 40 × 10 - 4 3 × 10 8 = 1 .6 × 10 - 10 kg m s - 1

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