The vector equation of X Y-plane is - Vidyadip

MCQ

The vector equation of $X Y$-plane is

A
$\overrightarrow{ r } \cdot \hat{ k }=0$
B
$\vec{r} \cdot \hat{j}=0$
C
$\overrightarrow{ r } \cdot \hat{ i }=0$
D
$\overrightarrow{ r } \cdot \vec{n}=1$

✓

Answer

Vector equation of $X Y$-plane is $\vec{r} \cdot \hat{k}=0$.

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