The magnitude of the vector $6\hat{i} - 2\hat{j} + 3\hat{k}$ is
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 7 ##
Let $\vec{a} = 6\hat{i} - 2\hat{j} + 3\hat{k}$
$∴\text{Magnitude of } \vec{a} = |\vec{a}| = |6\hat{i} - 2\hat{j} + 3\hat{k}|$
$= \sqrt{6^2 + 2^2 + 3^2} = 7 \text{ units}$