If ` vec a\ ` is a non zero vecrtor iof modulus ` vec a\ a n d\ m` is a non zero scalar such that `m a` is a unit vector, write the value of `mdot`

Options

A. `m = pm 1 `
B. `a = |m|`
C. `a = 1//|m|`
D. `a = 1/m`

Answer

C

Explanation

`m veca` is a unit vector if and only if
`|mveca| = 1 rArr |m| |veca| = 1 rArr |m| a =1 rArr a = (1)/(|m|)`