Question Number 132872 by aurpeyz last updated on 17/Feb/21
$${linear}\:{magnification}\:{for}\:{convex} \\ $$$${mirror} \\ $$$$=\frac{{image}\:{height}}{{object}\:{height}}=\frac{−{image}\:{distance}}{{object}\:{distance}} \\ $$$$ \\ $$$${is}\:{this}\:{formula}\:{correct}?\:{what}\:{is}\:{the} \\ $$$${meaning}\:{of}\:{the}\:{negative}\:{sign}? \\ $$