1.

Unit vector along `3hat(i)+3hat(j)` isA. `(hat(i)+hat(j))/(sqrt(2))`B. `(3hat(i)+3hat(j))/(2)`C. `hat(i)+hat(j)`D. `(hat(i)+hat(j))/(sqrt(3))`

Answer» Correct Answer - A
unit vector `=(3hat(i)+3hat(j))/(sqrt(3^(2)+3^(2)))=(hat(i)+hat(j))/(sqrt(2))`


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