Question Number 170721 by sciencestudent last updated on 29/May/22
$${Which}\:{is}\:{the}\:{true}\:{magnefication}'{s}\: \\ $$$${formula}\:{for}\:{the}\:{concave}\:{mirror}? \\ $$$${m}=\frac{{f}}{{p}−{f}}? \\ $$$${m}=−\frac{{f}}{{p}−{f}}? \\ $$
Commented by sciencestudent last updated on 30/May/22
$${Please}\:{help}\:{me}. \\ $$