A) i ? j + k
B) i + j + k
C) \[\frac{\mathbf{i}+\mathbf{j}-\mathbf{k}}{\sqrt{3}}\]
D) \[\frac{\mathbf{i}-\mathbf{j}+\mathbf{k}}{\sqrt{3}}\]
Correct Answer: D
Solution :
Unit vector perpendicular to both \[=\frac{(\mathbf{i}+\mathbf{j})\times (\mathbf{j}+\mathbf{k})}{|(\mathbf{i}+\mathbf{j})\times (\mathbf{j}+\mathbf{k})|}=\frac{\mathbf{i}-\mathbf{j}+\mathbf{k}}{\sqrt{3}}\].You need to login to perform this action.
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