A) 0
B) \[\frac{1}{\sqrt{2}}(\hat{i}-\hat{j})\]
C) \[\frac{1}{\sqrt{2}}(\hat{i}+\hat{j})\]
D) \[\frac{\hat{i}-\hat{j}}{2}\]
Correct Answer: A
Solution :
\[(\hat{i}+\hat{j})\cdot (\hat{i}-\hat{j})=0,\]so, they remain at right angles to each other. So component is zero.
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