Question

Redraw the given diagram in your note book. The diagram shows the path of a ray of light through an equilateral prism. Answer the following questions (a) Which is the refracted ray? (b) Which is the emergent ray? (c) What name is given to angle 1? (a) What name is given to angle 3? (e) What name is given to angle 5? (0) What is the relation between the angles 1,2,3 and 4??​

Answer 1

AnswEr :

(a) The ray FG is the refracted ray.

(b) The ray GJ is the emergent ray.

(c) The name of angle 1 is angle of incidence.

(d) The name of angle 3 is angle of deviation.

(e) The name of angle 5 is angle of reflection.

(f) The relation b/w the angles 1, 2, 3 & 4 is :

◆ Angle of incidence + Angle of emergence = Angle of prism + Angle of deviation or,

• ∠i + ∠e = ∠A + ∠D

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Prism :

• A prism is a piece of glass or any other transparent material which is bounded by two triangular surfaces and three rectangular surfaces.

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