A circular beam of light (diameter d) falls on a plane surface of a liquid. The angle of incidence is `45^(@)` and refractive index of the liquid is `mu`. The diameter of the refracted beam is

A circular beam of light of diameter d = 2 cm falls on a plane refractive of glass. The angle of incidence is 60^(@) and refractive index of glass is mu = 3//2 . The diameter of the refracted beam is

A circular beam of light of diameter d = 2 cm falls on a plane refractive of glass. The angle of incidence is 60^(@) and refractive index of glass is mu = 3//2 . The diameter of the refracted beam is

A circular beam of light of diameter (width) falls on a plane surface of glass. The angle of incidence is .I., angle of refraction is .r. and refractive index of glass is mu . Then the diameter of the refracted beam d. is…….

A ray of light incidents on a refracting surface at 30^(@) with the surface . If the angle of refraction is 45^(@) refractive index of the medium is

A light of wavelength fall on a plane surface at an angle of incidence 53. The refractive index of surface material, if the reflected light is completely plane polarised is