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The magnitude of the vector $6\hat{i} - 2\hat{j} + 3\hat{k}$ is |
1 5 7 12 |
7 |
The correct answer is Option (3) → 7 ## Let $\vec{a} = 6\hat{i} - 2\hat{j} + 3\hat{k}$ $∴\text{Magnitude of } \vec{a} = |\vec{a}| = |6\hat{i} - 2\hat{j} + 3\hat{k}|$ $= \sqrt{6^2 + 2^2 + 3^2} = 7 \text{ units}$ |
