AP EAMCET Medical 2017 Shift 1 Paper

A convex lens of focal length 9 cm is placed 10 cm before a screen. A glass plate (µ = 1.5) of thickness 1.5 cm is inserted between the lens and the screen as shown in the figure. To focus image of an object "O' on the screen, the object must be placedat a distance of .r cm from the lens. Then the value of |x| is