Shown in the figure here is a convergent lens placed inside a cell filled with a liquid. The lens has focal length `+ 20 cm` when in air and its material has refractive index 1.50. If the liquid has refractive index 1.60, the focal length of the system is

The given figure shows a convergent lens placed inside a cell filled with liquid. The lens has focal length +20 cm when in air , and its metrial has refractive index 1.50 . If the liquid has refractive index 1.60 , then focal length of the lens in the cell is

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 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 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 convex lens of focal length 20 cm in air is dipped in a liquid whose refractive index is equal to the refractive index of the lens. Now the focal length will be