If a=i+j-k then the value of |a|^2 will be - - Vidyadip

MCQ

If $\vec{a}=\hat{i}+\hat{j}-\hat{k}$ then the value of $|\vec{a}|^2$ will be -

A
$\sqrt{3}$
B
-3
C
1
D
2

✓

Answer

self

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