Vector Algebra Question 339

Question: If i, j, k are unit vectors, then

[MP PET 2001]

Options:

A) i . j $ = $ 1

B) i . i $ = $ 1

C) $ \mathbf{i}\times \mathbf{j}=1 $

D) $ \mathbf{i}\times (\mathbf{j}\times \mathbf{k})=1 $

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Answer:

Correct Answer: B

Solution:

  • It is obvious.