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Question: Answered & Verified by Expert
If a×b  b  →×c  c  →×a=λ a→   b →   c →2 then λ is equal to 
MathematicsVector AlgebraJEE MainJEE Main 2014 (06 Apr)
Options:
  • A 0
  • B 1
  • C 2
  • D 3
Solution:
2609 Upvotes Verified Answer
The correct answer is: 1

a×bb×cc×a=λabc2

a×bb×cc×a =a×b×b×c.c×a

=abcb-abbc·c×a

=abcb. c×a       abb=0

=abcbca

=abc[abc]

=abc2

 λ = 1.

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