4. the magnification equation is:\n\n$m = \\frac{s_i}{s_o}$\n\n$m = \\frac{-s_o}{s_i}$\n\n$m =…

4. the magnification equation is:\n\n$m = \\frac{s_i}{s_o}$\n\n$m = \\frac{-s_o}{s_i}$\n\n$m = \\frac{h_o}{h_i}$\n\n$m = \\frac{h_i}{h_o}$
Answer
Explanation:
Step1: Define magnification in optics
Magnification $M$ is the ratio of image height to object height.