Let and a vector be such that . If , then is equal to :
- (A)-6
- (B)-5✓ Correct
- (C)-4
- (D)-3
Answer: (B)
Solution
Rewrite as , so and . With and , the condition gives , so and . Using and ,
JEE Main · 2026 · 08 Apr 2026 · Shift 2 · Single correct option