A continuous laser beam of power and wavelength is incident perpendicularly on a…

PHYSICS · Single correct · CBSE · Physics · Electromagnetic Waves · Electromagnetic Waves

Problem

A continuous laser beam of power

5.0\,\text{W}

and wavelength

532\,\text{nm}

is incident perpendicularly on a perfectly reflecting flat mirror of area

2.0\,\text{cm}^2

. Assuming the entire beam is reflected, determine the average radiation pressure exerted on the mirror. (a)

8.3\times10^{-5}\,\text{Pa}

(b)

1.7\times10^{-6}\,\text{Pa}

(c)

1.7\times10^{-4}\,\text{Pa}

(d)

3.3\times10^{-8}\,\text{Pa}