Draw a ray diagram to show that the depth of a vessel containing water when seen from above appears to be less than its real depth.

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

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

Define the following terms:

(a) Incident ray

(b) Refracted ray

(c) Angle of incidence

(d) Angle of refraction