The sun deliverse 103 W/m2 of electromagnetic flux to the earth's surface. The total power that is incident on a roof of dimensions 8m × 20m, the radiation force on the
Answer & explanation
Correct answer: option 2
F = PA = $\frac{S A}{c}=\frac{1.6 \times 10^5}{3 \times 10^8}$ = 5.33 × 10-4 N