MCQOPTIONS
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MCQOPTIONS
| 1. |
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. | \[\frac{3\pi {{x}^{2}}i}{C}\] |
| Answer» B. \[\frac{\pi {{x}^{3}}{{i}^{2}}}{2C}\] | |