If | a b |=4, | a . b |=2, then | a |^2 | b |^2= - Vidyadip

MCQ

If $\big|\vec{\text{a}}\times\vec{\text{b}}\big|=4,\big|\vec{\text{a}}.\vec{\text{b}}\big|=2,$ then $|\vec{\text{a}}|^2\big|\vec{\text{b}}\big|^2=$

A
$6$
B
$2$
✓
$20$
D
$8$

✓

Answer

Correct option: C.

$20$

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