[" Q.A concave lens of refractive index "1.5" is immersed in a medium of refractive index "],[1.65." What is the nature of the lens? "/" mark "]

What happens when a convex lens of refractive index 1.2 is immersed in a liquid of refractive index 1.3?

A convex lens of refractive index 1.5 is immersed in a liquid of refractive index: 1.6 What will happen to the focal length and nature of lens ?

A convex lens of refrative index 1.5 is immersed in a liquid of refractive index: 1.5. what changes happen to the focal length of the lens in the three cases?

A concave lens made of material of refractive index 1.6 is immersed in a medium of refractive index 2.0 The two surfaces of the concave lens have the same radius of curvature 0.2 m. The lens will behave as a

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 double convex lens of refractive index m_(1) is immersed in a liquid of refractive index m_(2) . This lens will act as:

A double convex lens of refractive index m_(1) is immersed in a liquid of refractive index m_(2) . This lens will act as: