A ray of light passes from glass into air, angle of refraction; (a) equal to the angle of incidence (b) greater than the angle of incidence (c) smaller than the angle of incidence (d) ${45}^{\circ }$

Q. When a ray of light passes from air into glass, is the angle of refraction greater than or less than the angle of incidence?

Q. In the experiment to trace the path of a ray of light through a parallel sided glass slab, a student measured the angles of refraction for three different angles of incidence. He will find that:
(1) angle of refraction is always equal to the angle of incidence
(2) angle of refraction is always smaller than the angle of incidence
(3) angle of refraction is always greater than the angle of incidence
(4) angle of refraction can be smaller or greater than the angle of incidence depending on the refractive index of glass slab

Q. Mark the correct statement/statements:
a) Angle of incidence is equal to angle of refraction
b) Angle of refraction is smaller than angle of incidence when light ray travels from rarer medium to denser medium.
c) Angle of refraction is greater than angle of incidence when light ray travels from denser medium to rarer medium.

Q. A ray of light passes from glass, having a refractive index of $1.6$ to air. The angle of incidence for which the angle of refraction is twice the angle of incidence is

Q. State whether true or false: