Two symmetrical double convex lenses A and B have same focal length, but the radii of curvature differ so that ${{R}_{B}}=0.9{{R}_{A}}$. If ${{\\mu }_{A}}=1.63$, Find $\\mu_B$.
The radii of curvature of the faces of a double concave lens are 10 cm and 15 cm.If focal length is 12 cm. What is the refractive index of glass?
Solved You have a double convex thin lens with a focal | Chegg.com
An unsymmetrical double convex thin lens forms the image of a point object on its axis. Will the position of the image change if the lens is reversed ?
A Double Convex Lens Mirror Price, Custom Two Convex Lenses Manufacturer | BRD Optical
Spherical Double Convex Lenses
optics - Lens used for glasses/contact lens and cameras - Physics Stack Exchange