MCQOPTIONS
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| 1. |
A mirror and a source of light are situated at the origin 0 and at a point on OX respectively. A ray of light from the source strikes the mirror and is reflected. If the direction ratios of the normal to the plane are 1, -1, 1, then direction consines of the reflected rays are |
| A. | \[\frac{1}{3},\frac{2}{3},\frac{2}{3}\] |
| B. | \[-\frac{1}{3},\frac{2}{3},\frac{2}{3}\] |
| C. | \[-\frac{1}{3},\frac{2}{3},-\frac{2}{3}\] |
| D. | \[-\frac{1}{3},-\frac{2}{3},\frac{2}{3}\] |
| Answer» E. | |