Light entering an air glass `(mu = 1.5)` boundary is partly reflected and partly refracted. If the incident and reflected rays are at right angles to each other, the angle of refraction r is given by

A ray of light entering from air to glas (mu=1.5) is partly reflected and partly refracted. lf the reflected and refracted rays are at right angles to each other, the angle of refraction is

A ray of light entering from air to glas (mu=1.5) is partly reflected and partly refracted. lf the reflected and refracted rays are at right angles to each other, the angle of refraction is

If a ray of light in a denser medium strikes a rarer medium at an angle of incidence i , the angle of reflection and refraction are respectively r and r', if the reflected and refracted rays are at right angles to each other, the critical angle for the given pair of media is

If a ray of light in a denser medium strikes a rarer medium at an angle of incidence i, the angles of reflection and refraction are respectively, r and r' If the reflected and refraction rays are at right angles to each other, the critical angle for the given pair of media is

If a ray of light in a denser medium strikes a rarer medium at an angle of incidence i, the angles of reflection and refraction are respectively, r and r' If the reflected and refraction rays are at right angles to each other, the critical angle for the given pair of media is

A ray of light is incident from air on a glass plate. It is partly reflected and partly refracted. The phase difference between the reflected and refracted wave is :

Statement I: A light ray is incident on a glass slab. Some portion of it is reflected and some is refracted. Refracted and reflected rays are always perpendicular to each other. Statement II: Angle of incidence is equal to angle of reflection.

A ray of light strikes a glass plate at an angle of 60^@ . If the reflected and refracted rays are perpendicular to each other, the index of refraction of glass is