MCQ
If the angle between the normal to the planes is $\frac{\pi}{2}$, then
  • A
    $\overline{ n }_1 \cdot \overline{ n }_2=1$
  • $\overline{ n }_1 \cdot \overline{ n }_2=0$
  • C
    $\overline{ n }_1=\lambda \overline{ n }_2$
  • D
    $\bar{n}_1-\bar{n}_2=0$

Answer

Correct option: B.
$\overline{ n }_1 \cdot \overline{ n }_2=0$
B

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