If a (b c) = 0, then - Vidyadip

MCQ

If $a \times (b \times c) = 0,$ then

A
$|a|\, = \,|b|\,.\,|c|\, = 1$
✓
$b||c$
C
$a||b$
D
$b\, \bot \,c$

✓

Answer

Correct option: B.

$b||c$

b
(b) $a \times (b \times c) = 0 \Rightarrow a||(b \times c)$ or $b \times c = 0$

i.e., $b||c$ or $a = 0.$

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