Question

A ray of light makes an angle of 50° with surface s¹of the slab it's angle of incidence will be

Answer 1

Given :-

A ray of light makes an angle of 50° with surface s₁ of the slab

To Find :-

Angle of incidence

Solution :-

According to the question

Angle of ray + Angle of incidence = Angle of a right angle

∠r + ∠i = 90

Given,

Angle of ray is 50°

So, We need to find the angle of incidence

Let the angle of incidence be ∠i

50 + ∠i = 90

∠i = 90 - 50

∠i = 40

Hence

Angle of incidence is 40°

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Answer 2

Explanation:

✨---------------------------✨

Given :-

A ray of light makes an angle of 50° with surface s₁ of the slab

To Find :-

• Angle of incidence

Solution :-

• According to the question

Angle of ray + Angle of incidence = Angle of a right angle

∠r + ∠i = 90

Given,

Angle of ray is 50°

So, We need to find the angle of incidence

Let the angle of incidence be ∠i

1. 50 + ∠i = 90

1. ∠i = 90 - 50

1. ∠i = 40

Hence

Angle of incidence is 40°

hope this helps you ☺️