Define the following terms:

(a) Incident ray

(b) Refracted ray

(c) Angle of incidence

(d) Angle of refraction

A ray of light travels from a denser medium to a rarer medium. How will it bend?

A ray of light falls normally on a glass slab. What is the angle of incidence?

The diagram given below in Fig. 5.38 shows a ray of light AO falling on a surface separating two media. Draw the refracted ray in each, case.

(a)

(b)

(c)