An earth orbiting satellite has solar energy collecting panel with total area 5 m2 . If solar radiations are perpendicular and completely absorbed, the average force associated with the radiation pressure is (Solar constant= 1.4 kWm−2 )

2.33 × 10−3 N 2.33 × 10−4 N 2.33 × 10−5 N 2.33 × 10−6 N

2.33 × 10−5 N

Power = I × area = (1.4 × 103) × 5 Force $F=\frac{Power}{c}=\frac{1.4×10^3×5}{3×10^8}$ $=2.33 × 10^{-5} $ N