24. A ray of light incidents at an angle of incidence 60° on a refrac

1.	24. A ray of light incidents at an angle of incidence 60° on a refracting surface. If the reflected andrefracted rays are perpendicular to each other, the refractive index of the medium is
Answer» AnswEr : The refractive index of the GLASS will be √3 = 1.732. Given : • A ray of light strikes a glass plate at an ANGLE of 60° with the glass surface. • The REFLECTED and REFRACTED rays are PERPENDICULAR to each other. To Find : • Refractive index of the medium = ? Explanation : As reflected and refracted rays are perpendicular to each other, Angle of incidence = sin 60° Angle of refraction = sin 30° So, ★ Refractive index of the medium : ➝ sin i / sin r ➝ sin 60°/ sin 30° ➝ (√3/2) / (1/2) ➝ √3 ➝ 1.732 $\therefore$ The refractive index of the glass will be 1.732 ⠀⠀━━━━━━━━━━━━ Something Interesting : ★ Refractive index is the dimensionless number. ★ It is all about the speed of light . ★ Refractive index are of 2 types : Relative refractive index. Absolute refractive index. ⠀⠀━━━━━━━━━━━━

24. A ray of light incidents at an angle of incidence 60° on a refracting surface. If the reflected andrefracted rays are perpendicular to each other, the refractive index of the medium is

Answer»

AnswEr :

The refractive index of the GLASS will be √3 = 1.732.

Given :

• A ray of light strikes a glass plate at an ANGLE of 60° with the glass surface.

• The REFLECTED and REFRACTED rays are PERPENDICULAR to each other.

To Find :

• Refractive index of the medium = ?

Explanation :

As reflected and refracted rays are perpendicular to each other,

Angle of incidence = sin 60°
Angle of refraction = sin 30°

So,

★ Refractive index of the medium :

➝ sin i / sin r

➝ sin 60°/ sin 30°

➝ (√3/2) / (1/2)

➝ √3

➝ 1.732

$\therefore$ The refractive index of the glass will be 1.732

⠀⠀━━━━━━━━━━━━

Something Interesting :

★ Refractive index is the dimensionless number.

★ It is all about the speed of light .

★ Refractive index are of 2 types :

Relative refractive index.
Absolute refractive index.