Answer- The above question is from the chapter 'The Human Eye and the Colourful World'.

Concept used: Path of light travelling through prism.

Given question: Draw the path of light ray when it passed through the prism with the angles of deviation. Write the expression of angles of deviation.​

Answer: (Answer has been attached.)

Here,

∠A = Angle of prism

∠D = Angle of deviation

∠i = Angle of incidence

∠r₁ and ∠r₂ = Angles of refraction

∠e = Angle of emergence

Expression:-

∠i + ∠e = ∠A + ∠D