1.

The unit vector along \[\hat{i}+\hat{j}\] is                             

A.             \[\hat{k}\]                             
B.             \[\hat{i}+\hat{j}\]
C.             \[\frac{\hat{i}+\hat{j}}{\sqrt{2}}\]                                               
D.             \[\frac{\hat{i}+\hat{j}}{2}\]
Answer» D.             \[\frac{\hat{i}+\hat{j}}{2}\]


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