A thin converging lens has a focal length f in air. If it is completely immersed in a liquid , briefly explain how the focal length of the lens will vary?

Define focal length of a lens

A convex lens of focal length 0.2 m and made of glass 9mu=1.50) is immersed in water 9mu=1.33) .Find the chajnge in the focal length of the lens.

Red light is incident on a think converging lens of focal length f. Briefly explain how the focal length of the lens will change,if red light is replaced with blue light.

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 ?

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 mirror of focal length f ( in air ) is immersed in water (mu=4//3) .The focal length of the mirror in water will be

Is focal length of eye lens fixed? If not, why?

What happens to be focal length of convex lens when it is immersed in water?