The expression \[\left( \frac{1}{\sqrt{2}}\hat{i}+\frac{1}{\sqrt{2}}\h – McqOptions

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1.	The expression \[\left( \frac{1}{\sqrt{2}}\hat{i}+\frac{1}{\sqrt{2}}\hat{j} \right)\] is a
A.	Unit vector
B.	Null vector
C.	Vector of magnitude \[\sqrt{2}\]
D.	Scalar
Answer» B. Null vector

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