Physics
Define the following terms:
(a) Incident ray
(b) Refracted ray
(c) Angle of incidence
(d) Angle of refraction
Answer
(a) Incident ray — The ray of light falling on the surface separating the two media is called the incident ray.
(b) Refracted ray — The ray of light traveling in the other medium in the changed direction is called the refracted ray.
(c) Angle of incidence — The angle between the incident ray and the normal is called the angle of incidence (i).
(d) Angle of refraction — The angle between the refracted ray and the normal is called the angle of refraction (r).
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