A lens made of material of Refractive index `mu_(2)` is surrounded by a medium of Refractive Index `mu_(1)`. The focal length f is related as

A concave lens made of a material of refractive index mu_g is immersed in a medium of refractive index mu_l , equal to and

A sphere of radius R made of material of refractive index mu_(2) is placed in a medium of refractive index mu_(1) . Where would an object be placed so that a real image is formed at equidistant fromk the sphere? ltbgt

A sphere of radius R made of material of refractive index mu_(2) is placed in a medium of refractive index mu_(1) . Where would an object be placed so that a real image is formed at equidistant fromk the sphere? ltbgt

A convex lens made up of a material of refractive index mu_(1) is immersed in medium of refractive index mu_(2) as shown in the figure. The relation between mu_(1) and mu_(2) is

A lens made from a material of absolute refractive index n_1 is placed in a medium of absolute refractive index n_2 . The focal length f of the lens is related to n_1 and n_2 as :

A thin bi-convex lens made out of a material of refractive index mu_(1) is place in a medium of refractive index mu_(2) . A paraxial beam of light, parallel to the principal axis of the lens, is shown in the figure. Based on the ray diagram, we can conclude that

A thin bi-convex lens made out of a material of refractive index mu_(1) is place in a medium of refractive index mu_(2) . A paraxial beam of light, parallel to the principal axis of the lens, is shown in the figure. Based on the ray diagram, we can conclude that