1.

A mirror and a source of light are situated at the origin O and at a pointon vec(OX) respectivrly. A ray of light from the sorce strikes the mirror and is reflected. If (1,-1,1) are direction ratios of the normal to the plane, find the D.C's of the reflected ray.

Answer»


ANSWER :`(-(1)/(3),-(2)/(3),(2)/(3))`


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