If a is a non zero vector of magnitude ‘a’ and a non zero scalar,… - Vidyadip

Question

If $\vec a$ is a non zero vector of magnitude ‘a’ and $\lambda $ a non zero scalar, then $\lambda \vec a$ is a unit vector if

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Answer

$\lambda \vec a$is a unit vector if and only if $\vec a$ is equal to $\frac{1}{{\left| \lambda \right|}}$.

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