The intensity of solar radiation near the earth is 1.4 × 103 w/m2 . what force is exerted by solar radiation impinging normally on a 5.0 m2 perfectly reflecting panel of an artificial satellite orbiting the earth?

4.665×10⁻¹¹ N

Explanation:

Intensity of solar radiation=I=1.4×10³ W/m²

Area of panel=A=5.0 m²

speed of sound=c=3×10⁸ m/s

∴Total Solar Radiation Pressure=0.933×10⁻¹¹ Ws/m³

Force= Pressure×Area

Force=0.933×10⁻¹¹×5

Force=4.665×10⁻¹¹ Ws/m=4.665×10⁻¹¹ N

∴Force is exerted by solar radiation impinging normally on a perfectly reflecting panel of an artificial satellite orbiting the earth is 4.665×10⁻¹¹ N

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