A convex lens of focal length 30 cm , a concave lens of focal length 120 cm , and a plane mirror are arranged as shown . For an object kept at a distance of 60 cm from the convex lens, the final image, formed by the combination , is a real image , at a distance of :

`|"Focal length" | = |"Focal length"|`
= `30 cm " " =120 cm`

Options

A. 70 cm from the convex lens
B. 60 cm from the convex lens
C. 60 cm from the concave lens
D. 70 cm from the concave lens

Answer

B