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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 2 > Chapter 18 - Refraction at Spherical Surfaces > An equi-convex lens, having radius of curvature 33 cm is placed on a horizontal plane mirror and a pin held 20 cm above the lens coincides with its image. Now the space between the and the mirror is filled with a liquid in order to coincide with the image the pin has to be raised by 5 cm. The refractive index of the liquid is

An equi-convex lens, having radius of curvature 33 cm is placed on a horizontal plane mirror and a pin held 20 cm above the lens coincides with its image. Now the space between the and the mirror is filled with a liquid in order to coincide with the image the pin has to be raised by 5 cm. The refractive index of the liquid is

A convex lens of glass has power P in air. If it is immersed in water its power will be An equi-convex lens