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

$2.33 \times 10^{-5} N$

As, power = solar constant × area

= (1.4 × 10³) × 5

∴ Force = $\frac{\text {solar constant × area}}{\text { speed of light }}=\frac{1.4 × 10^3 × 5}{3 × 10^8}=2.33 × 10^{-5} N$