MCQ
If the vector is a unit vector in the direction of A. So
- ✓$\hat{n}=\frac{\vec{A}}{|\vec{A}|}$
- B$\hat{n}=\frac{|\vec{A}|}{\vec{A}}$
- C$\hat{n}=|\overrightarrow{ A }||\overrightarrow{ A }|$
- D$\hat{n}=\hat{n} \times \overrightarrow{ A }$
✓
Answer
Correct option: A.
$\hat{n}=\frac{\vec{A}}{|\vec{A}|}$
(A)
$\begin{aligned}
\text { Unit vector } & =\frac{\text { Vector }}{\text { Magnitude of vector }} \\
\hat{n} & =\frac{\overrightarrow{A}}{|\overrightarrow{A}|}
\end{aligned}
$
Hence, the correct option is (A).
$\begin{aligned}
\text { Unit vector } & =\frac{\text { Vector }}{\text { Magnitude of vector }} \\
\hat{n} & =\frac{\overrightarrow{A}}{|\overrightarrow{A}|}
\end{aligned}
$
Hence, the correct option is (A).
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