Question

A vector $\overrightarrow{r}$ is inclined at equal angles to the three axes. If the magnitude of $\overrightarrow{r}$ is $3\sqrt3$ units, then the value of $\overrightarrow{r}$ is:

• A. $\pm3(\hat{i}+\hat{j}+\hat{k})$
• B. $\pm2(\hat{i}+\hat{j}+\hat{k})$
• C. $\pm(\hat{i}+\hat{j}+\hat{k})$
• D. $\pm3(\hat{i}-\hat{j}-\hat{k})$

Answer 1

Answer: (A)

$\pm3(\hat{i}+\hat{j}+\hat{k})$

Answer 2

The correct option is (A):$\pm3(\hat{i}+\hat{j}+\hat{k})$