Two plano concave lenses of glass 3 2 have radii of

Last updated: 6/30/2023

Two plano concave lenses of glass 3 2 have radii of curvature of 20 cm and 30 cm respectively they are placed in contact with curved faces towards each other and space between them is filled with water of refractive index 4 3 Find the magnitude of focal length in cm of the combination