JEE Main 20204 Sep, Evening shiftPhysicsMediumOptics190× since 2002
The distance between an object and a screen is 100 cm. A lens can produce real image of the
object on the screen for two different positions between the screen and the object. The distance
between these two positions is 40 cm. If the power of the lens is close to where N is an
integer, the value of N is _________.