A converging lens of refractive index `1.5` and of focal length `15 cm` in air, has the same radii of curvature for both sides. If it is immersed in a liquid of refractive index `1.7`, find the focal length of the lens in the liquid.

A diverging lens of refractive index 1.5 and focal length 15 cm in air has same radii of curvature for both sides. If it is immersed in a liquid of refractive index 1.7 , calculate focal length of the lens in liquid.

A convex lens of refractive index 1.5 has a focal length of 18 cm in air.Calculate the change in focal length,when it is immersed in water of refractive index 4//3 .

A convex lens of refractive index 1.5 has a focal length of 18 cm in air. Calculate the change in its focal length when it is immersed in water of refractive index (4)/(3) .

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 thin lens made of a material of refractive index mu_(0) has a focal length f_(0) in air. Find the focal length of this lens if it is immersed in a liquid of refractive index mu .