Can you explain in details and draw the related reflection ray, incidence ray and normal to reach the answers? And in answering the question, which formula or law is applied. Thks :

Michael is viewing a toy figureO?through a periscope whose two plane mirrors

are30cm?apart. His eyeE ?is8cm?in front of the lower mirrorM2?while the toy

soldier is15cm?in front of the upper mirrorM1.

(a)?How far is the image of the toy soldier produced byM2?from Michael's eye?

(b)?If the distance between the plane mirrors is shortened, how will the answer

in (a) change?