I ONLY Have $1$ hour A dentist uses a small mirror to make a $4x$ upright image of a tooth placed $1\mathrm{.}8cm$ in

front of the mirror.

$($a$)$ What kind of mirror should she use?

$($b$)$ What will be the focal lefngth of the mirror?

$($c$)$ What will be the radius of curvature of the mirror?