CBSE Class 12 Mathematics 2026 Main Paper 65/3/2 · Q191 Marksvector_collinearity
CBSE Class 12 Mathematics 2026 Main Paper 65/3/2 · Question 19 (Vector Algebra)
Assertion: For a≠0 the vectors a and −2a are collinear. Reason: a·(−2a)=0.
✅ Step-by-Step Solution
Final Answer: The assertion is true and the reason is false.
- The vectors are scalar multiples and therefore collinear. Their dot product is −2|a|², which is nonzero.
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