A point source of light is kept at a distance of 15 cm from

Last updated: 6/13/2023

A point source of light is kept at a distance of 15 cm from a converging lens on its optical axis The focal length of the lens is 10 cm and its diameter of aperture is 3 cm A screen is placed on the other side of the lens perpendicular to the axis of the lens at a distance 20 cm from it Find the area of the illuminated part of the screen O x T 15 cm cm cm cm 2 20 cm Screen