Emw of intensity I falling normally on a perfectly reflecting surface. The pressure exerted by wave on the surface is

Q. Light of intensity 1.5 kW/m2 is incident normally on a perfectly absorbing surface. The pressure exerted by the light on the surface is

Q. A plane light wave of intensity $I=0.20Wc{m}^{-2}$ falls on a plane mirror surface with reflection coefficient $\rho =0.8$. The angle of incident is ${45}^o$. In terms of corpuscular theory, find the magnitude of the normal pressure exerted on that surface:

Q. The electric field in a plane electromagnetic wave is given by
$\overrightarrow{E}=200cos\left[\right(0.5\times {10}^3)x-(1.5\times {10}^{11}\left)t\right]\frac{V}{m}\hat{j}$. This wave falls normally on a perfectly reflecting surface having an area of $100{\text{cm}}^2$. If the radiation pressure exerted by the E.M. wave on the surface during a $10$ minute exposure is $\frac{x}{{10}^9}\frac{N}{m^2}$. Find the value of $x$

Q. A plane electromagnetic wave is incident on a plane surface of area A normally and is perfectly reflected. If energy E strikes the surface in time t then average pressure exerted on the surface is (c = speed of light):

Q. The pressure exerted by an electromagnetic wave of intensity $I\left(watt/m^2\right)$ on a non-reflecting surface is : [c is the velocity of light]