Q.

Let the lines x-1λ=y-21=z-32 and x+26-2=y+183=z+28λ be coplanar and P be  the plane containing these two lines. Then which  of the following points does NOT lies on P?

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a

0, -2, -2

b

3, -1, 0

c

0, 4, 5

d

-5, 0, -1 

answer is D.

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Detailed Solution

Given, L1:x-1λ=y-21=z-32 and L2:x+26-2=y+183=z+28λ are coplanar 272031λ12-23λ=0λ2+9-6λ=0 Normal to the plane P which contains given lines is given by λ-32=0 λ=3 Now, normal of plane P, which contains L1 and L2 i^j^k^312-233=-3i^-13j^+11k^ Equation of required plane P is-3x-1-13y-2 +11z-3=0 3x+13y-11z+4=0 0, 4, 5 does not lie on plane P.

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