question_answer

A perfectly reflecting solid sphere of radius x is kept in the path of a parallel beam of light of large aperture. If the beam carries an intensity I, find the force exerted by the beam on the sphere.

A) \[\frac{\pi {{x}^{2}}i}{C}\]

B) \[\frac{\pi {{x}^{3}}{{i}^{2}}}{2C}\]

C) \[\frac{\pi x{{i}^{2}}}{2C}\]

D) \[\frac{3\pi {{x}^{2}}i}{C}\]