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A is a vector quantity such that |\(\vec A\)| = non-zero constant. Which of the following expressions is true for \(\vec A\)?(A) \(\vec A\).\(\vec A\) = 0(B) \(\vec A\) x \(\vec A\) < 0(C) \(\vec A\) x \(\vec A\) = 0(D) \(\vec A\) x \(\vec A\) > 0 |
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Answer» Correct option is (C) \(\vec A\) x \(\vec A\) = 0 |\(\vec A\)| \(\neq\)0 \(\vec A\) x\(\vec A\) = \(|\vec A||\vec A|\)sin 0°\(\hat n\) = 0 |
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