The veriety of glass used in making lenses and prisms is

The variety of glass used in making lenses and prisms is.

The glass used to make lenses and prisms is……………..

Which type of glass is used for making glass reinforced plastic?

Glass used for making wind screens of automobiles is

The least angle of deviation for a glass prism is equal to its refracting angle. The refractive index of glass is 1.5. Then the angle of the prism is

The least angle of deviation for a glass prism is equal to its refracting angle. The refractive index of glass is 1.5. Then the angle of the prism is