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Vectors — Maths STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceMathsVectors2 Marks
MCQ
The points $A (1,0,1), B (-1,2,3)$ and $C(0,1,2)$ are
  • A
    Non-collinear
  • ✓
    Collinear
  • C
    Non-coplanar
  • D
    None of these
✓

Answer

Correct option: B.
Collinear
(B) d.r.s. of AB and BC are $(-2,2,2)$ and $(1,-1,-1)$ respectively.
$\therefore \quad \frac{-2}{1}=\frac{2}{-1}=\frac{2}{-1}$
∴ the given points are collinear.

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