0 A lens having focal length f and aperture of diameter d

Last updated: 6/24/2023

0 A lens having focal length f and aperture of diameter d forms an image of intensity I in central region of d Aperture of diameter c f and lens is covered by a black paper Focal length of lens and intensity of image now will be respectively CBSE AIPMT 2010 a f and and 1 4 3 4 2 b 3f 4 d and 2 2 2