A lens of particular focal length is made from a given glass by adjusting radius of curvature. The formula applied in this case is lens maker.s formula. Explain the following facts based on lens maker.s formula (i) power of sun glasses is zero even though they are curved

A lens of particular focal length is made from a given glass by adjusting radius of curvature. The formula applied in this case is lens maker's formula. Derive lens maker's formula considering refraction at a spherical surface

A lens of a particular focal length is made from a given glass slab by adjusting radii of curvature. The formula used In this case is lens maker.s formula.Compare the focal length of a given converging lens for blue light with that using red light. Are they equal or diferent? Why?

A lens of a particular focal length is made from a given glass slab by adjusting radii of curvature. The formula used In this case is lens maker.s formula.Is it possible for a given lens to act as a converg ing lens in one medium and a diverging lens In another medium? Why?

The focal length of a lens has dependence on its radii of curvatures and refractive index. Derive Lens maker's formula.

Double-convex lenses are to be manufactured from by a glass of refractive index 1.55, with both faces of the same radius of curvature. What is the radius of curvature required if the focal length of the lens is to be 20 cm ?

Refraction of light is the phenomenon of change in the path of light ray when it goes from one medium to another.The radius of curvature of each face of a convex lens made of glass of refractive index 1.5 is 30 cm. Calculate the focal length of the lens in air.