If magnitude of dispersive power of two lens are 0 024 and 0

Last updated: 6/10/2023

If magnitude of dispersive power of two lens are 0 024 and 0 036 then focal length be for aberration free combination Question Type Single Correct Type 1 30 cm 40 cm 2 30 cm 45 cm 3 10 cm 30 cm 4 20 cm 35 cm