Dot product of two mutual perpendicular vector is
$0$
$1$
$\infty$
None of these
Dot product of two mutual perpendicular vector is
It is zero. Let $P$ and $Q$ be mutually perpendicular so their dot product would be equal to $-> $
$\mathrm{PQ} \cos 90=\mathrm{PQ}(0)=>0$