Question

In a clockwise system, which of the following is true.

• A. $\hat{j}\times \hat{k}=\hat{i}$
• B. $\hat{i}.\hat{i}=0$
• C. $\hat{j}\times \hat{j}=1$
• D. $\hat{k}\cdot \hat{i}=1$

Answer 1

Answer: (A)

In clockwise system:
$<br/>\begin{array}{l}<br/>\hat{i}\times \hat{j}=\hat{k}\\ <br/>\hat{j}\times \hat{k}=\hat{i}\\ <br/>\hat{k}\times \hat{i}=\hat{j}<br/>\end{array}<br/>$