An object is placed in front of convex surface of a glass plano-convex lens of thickness `d = 9.0 cm
Channel: Doubtnut
Date: 30/08/2020

An object is placed in front of convex surface of a glass plano-convex lens of thickness `d = 9.0 cm`. The image of that object is formed on the plane surface of the lens serving as a screen. Find (a) the transverse magnification if the curvature radius of the lens's convex surface is `R = 2.5 cm`, (b) the image illuminance if the luminance of the object i s`L = 7700 cd//m^(2)` and the entrance apertune diameter of the lens is `D = 5.0 mm`, losses of light are negligible.