A) \[\hat{j}\]
B) \[\hat{i}\]
C) \[\hat{k}\]
D) \[\vec{o}\]
Correct Answer: B
Solution :
The position vector of mid point of line joining the points whose position vectors are \[\hat{i}+\hat{j}-\hat{k}\]and \[\hat{i}-\hat{j}+\hat{k}\] \[=\frac{\hat{i}+\hat{j}-\hat{k}+\hat{i}-\hat{j}+\hat{k}}{2}=\frac{2\hat{i}}{2}=\hat{i}\]You need to login to perform this action.
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