Focal length of convex lens is 100 ~cm and focal length of concave lens is 8 ~cm . Find the magnification of the given combination of lens if object is placed at point O .

Step-by-step solution

For first lens m₁= v u = f u+f = 100 -50+100 =2 Image distance v=2 u=2 (-50)=-100 ~cm For second lens Now u=-190 ~cm , f=-8 ~cm , m₂= ? m₂= v u = f u+f = -8 -190-8 =0.04 Net magnification =m₁ m₂=0.08