QJEEM21Pheb0c: JEE Main 2021 Physics - Class 12 JEEM21Pheb0c Solution: The electric field in a plane electromagnetic wave is given by…

The electric field in a plane electromagnetic wave is given by

$$\overrightarrow{E}=200\cos \left[\left(\frac{0.5\times {10}^3}{m}\right)x-\left(1.5\times {10}^{11}\frac{rad}{s}\times t\right)\right]\frac{V}{m}\hat{j}$$. If this wave falls normally on a perfectly reflecting surface having an area of 100 cm². 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 .