Entry Test MCQ :: Vectors And Equilibrium

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Which one is a unit vector?

[A].	??3 i^ + ??3 j^ + ??3 k^	[B].	1/??3 i^ + 1/??3 j^ +1/ ??3 k^
[C].	??3 / 3 i^ + ??3 / 3 j^ + ??3 / 3 k^	[D].	both b and c are correct

Answer: Option D