A mirror and a source of light are situa...

A mirror and a source of light are situated at the origin O and at a point on OX, respectively. A ray of light from the sources strikes the mirror and is reflected. If the direction ratios of the normal to the plane are 1, -1, 1, then find the DCs of the reflected ray.

`1/3,2/3,2/3`

`-1/3,2/3,2/3`

`-1/3,-2/3,-2/3`

`-1/3,-2/3,2/3`

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