An object is placed 50 cm from a screen as shown

A converging is moved such that line MN is its principal axis. Sharp images are formed on the screen in two positions of lens separated by 30 cm. Find the focal length of the lens in cm

Question ID - 154116 | SaraNextGen Top Answer

An object is placed 50 cm from a screen as shown

A converging is moved such that line MN is its principal axis. Sharp images are formed on the screen in two positions of lens separated by 30 cm. Find the focal length of the lens in cm