Class/Course - Class XII
Subject - Math
Chapter - Three Dimensional Geometry
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Q.1 From a point P(λ, λ, λ) perpendiculars PQ and PR are drawn respectively on the lines y = x, z = 1 and y = -x , z = -1. If P is such that ∠QPR is a right angle, then the possible value (s) of λ is (are) | |
$\sqrt{2}$ | |
1 | |
-1 | |
$-\sqrt{2}$ | |