Two planes r_1 n_1=p_1 and r_2 n_2=p_2 are parallel if - Vidyadip

MCQ

Two planes $\bar{r}_1 \cdot \bar{n}_1=p_1$ and $\bar{r}_2 \cdot \bar{n}_2=p_2$ are parallel if

A
$\overline{ n }_1 \cdot \overline{ n }_2=1$
B
$\overline{ n }_1 \cdot \overline{ n }_2=0$
✓
$\overline{ n }_1=\lambda \overline{ n }_2$
D
$\bar{n}_1-\bar{n}_2=0$

✓

Answer

Correct option: C.

$\overline{ n }_1=\lambda \overline{ n }_2$

C

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