Radiation of intensity 1 W/m2 are striking on a metal plate. The pressure on the plate is:
Answer & explanation
Correct answer: option 1
As metal is reflecting surfaces and for reflecting surface radiation pressure,
$\mathrm{p}_{\mathrm{r}}=\frac{2 \mathrm{~S}}{\mathrm{c}}=\frac{2 \times 1}{3 \times 10^8}=0.667 \times 10^{-8} \mathrm{~N} / \mathrm{m}^{-2}$