Light with an intensity of 1 kW/m² falls normally on a surface and is completely reflected.The radiation pressure is: A)1 kPa B)3 *10¹¹ Pa C)1.7 * 10^-6 Pa D)3.3 * 10^-6 Pa E)6.7 *10^-6 Pa

Question

Quizplus · Accepted Answer

The radiation pressure for completely reflected light is given by P = 2I/c, where I is the intensity and c is the speed of light. Substituting I = 1 kW/m² and c = 3 x 10^8 m/s, we get P = 6.7 x 10^-6 Pa.

Light with an Intensity of 1 KW/m2 Falls Normally on a Surface

Light with an Intensity of 1 KW/m² Falls Normally on a Surface