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A ray of light comes light comes along the line L = 0 and strikes the plane mirror kept along the plane P = 0 at B. A(2, 1, 6)is a point on the line L = 0 whose image about P = 0 is A'. It is given that L = 0 is (x-2)/(3)= (y-1)/(4)= (z-6)/(5) and P =0is x+y-2z=3. The coordinates of B are |
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Answer» `(5, 10, 6)` `""x=2+ 3lamda, y=1 + 4 lamda, z=6+ 5lamda` LIES on PLANE `""x+y-2z=3` `rArr""2+3lamda +1 +4lamda- 2 (6+5lamda)=3` or `"" 3+7lamda-12-10lamda=3 or -3lamda=12 or lamda= -4` Point `B-= (-10, -15, -14)` |
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