For which angle of incidence reflected ray is completely polarised ?

When angle of incidence is 60^@ on surface of a glass slab, it is found that the reflected ray is completely polarised. The velocity of light in glass is

Light of wavelength 5000 Å falls on a plane reflecting surface. What are the wavelength and frequency of the reflected light? For what angle of incidence is the reflected ray normal to the incident ray?

What is the angle of incidence of a ray if the reflected ray is at an angle of 90^@ to the incident ray ?

When the light is incident at the polarising angle, which of the following is completely polarised ?

The speed of light in media M_(1) and M_(2) are 1.5 xx 10^(8) and 2 xx 10^(8) ms^(-1) respectively. A ray travels from medium M_(1) to the medium M_(2) with an angle of incidence theta . The ray suffers total internal reflection. Then the value of the angle of incidence theta is

Unpolarised light is incident on a plane glass surface. What should be the angle of incidence so that the reflected and refracted rays are perpendicular to each other?