Radiations of intensity 0.5 Wm-2 are striking a metal plate. The pressure on the plate is
Answer & explanation
Correct answer: option 1
Intensity or power per unit area of the radiations,
$ P = pv$
$ ⇒ p = \frac{P}{v}$
$ =\frac{0.5}{3×10^8} = 0.166 × 10^{-8}\, Nm^{-2}$