Consider a vector $\overrightarrow F = 4\hat i - 3\hat j.$ Another vector that is perpendicular to $\overrightarrow F $ is
$4\hat i + 3\hat j$
$6\hat i$
$7\hat k$
$3\hat i - 4\hat j$
Consider a vector $\overrightarrow F = 4\hat i - 3\hat j.$ Another vector that is perpendicular to $\overrightarrow F $ is
Force $F$ lie in the $x-y$ plane so a vector along $Z-$axis will be perpendicular to $F$.