MCQOPTIONS
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MCQOPTIONS
| 1. |
If \(\left| {\vec a + \vec b} \right| = \left| {\vec a - \vec b} \right|\), then which one of the following is correct? |
| A. | \(\vec a = \lambda \vec b\) for some scalar λ |
| B. | \(\vec a\) is parallel to \(\vec b\) |
| C. | \(\vec a\) is perpendicular to \(\vec b\) |
| D. | \(\vec a = \vec b = \vec 0\) |
| Answer» D. \(\vec a = \vec b = \vec 0\) | |