Question

The pressure exerted by an electromagnetic wave of intensity I (watt / m2) on a non reflecting surface is [c is the velocity of light ]

Answer 1

As,Intensity

$I \: = \: \: \dfrac{energy}{area \times \:time}$

$= \: \dfrac{F \: \times C}{A}$

$\dfrac{F}{A} = \dfrac{1}{C} \\ \\ P \: = \dfrac{1}{C}$