PG entrance exam CUET PG 2025 Mock Test Engineering Mathematics Calculus

If \(\bar a\) is a non zero vector and m is non zero scalar then m \(\bar a\) is a unit vector if

1
m = ± 1
2
|a| = |m|
3
|a| = 1
4
\(|a| = \frac{1}{{\left| m \right|}}\)
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