A corverging lens has a focal length of `20 cm` in air. It is made of a material of refractive index `1.6`. If is immersed in a liquid of refractive index `1.3`, what will be its new focal length ?

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 its new foacl length ?

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 its new foacl length ?

A converging lens has 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 its new focal length?

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 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 water of refractive index 1.3, what will be the new focal length?

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 ?