From a point `P(\lambda, \lambda, \lambda)`, perpendicular `PQ` and `PR` are drawn respectively on the lines `y = x, z =

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Q 1657145084.     From a point `P(\lambda, \lambda, \lambda)`, perpendicular `PQ` and `PR` are drawn respectively on the lines `y = x, z =1` and `y = -x, z= -1`. If `P` is such that `\angleQPR` is a right angle, then the possible value(s) of `\lambda` is(are)
JEE 2014 ADVANCED Paper - 1
A

`\sqrt{2}`

B

`1`

C

`-1`

D

`- \sqrt{2}`

HINT


Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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