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 ?

Define refractive index?

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 double convex lens made from a material of refractive index mu_1 is immersed in a liquid of refactive index mu_2 where mu_2 > mu_1 . What change, if any, would occur in the nature of the lens?

A converging lens has a focal length of 20 cm in air. It is made of a material of refractive index 1.6. If it is immersed in a liquid of refractive index 1.3, what will be the new focal length? How does the nature of the lens change. If this lens is immersed is a liquid of refractive index 1.8 ?

How does the angle of minimum deviation of a glass prism of refractive index 1.5 change,if it is immersed in a liquid of refrctive index 1.3?

A biconvex lens of a transparent material of refractive index 1.25 is immersed in water of refractive index 1.33 will the lens behave as a converging or a diverging lens?Give reason.

What is the unit of refractive index?

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 concave lens made of a material of refractive index mu_g is immersed in a medium of refractive index mu_l , greater than,A paprallel beam of light is incident on the lens. Trace the path of emerged rays