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1. |
A plane electromagnetic wave of wave intensity 6 W/m2 strikes a small mirror area 40 cm2, held perpendicular to the approaching wave. The momentum transferred by the wave to the mirror each second will be |
A. | \[6.4\times {{10}^{-7}}kg-m/{{s}^{2}}\] |
B. | \[4.8\times {{10}^{-8}}kg-m/{{s}^{2}}\] |
C. | \[30{}^\circ \] |
D. | \[1.6\times {{10}^{-10}}kg-m/{{s}^{2}}\] |
Answer» E. | |