Question

Homework Vucono
the refractive index of glass is 1.5, calculate the angle of deviation for a ray of light travelling from glass
when the angle of incidence is 30°.
(a) air to glass
(b) glass to air
T a le ofir
. -1/ 31 the anale of refraction in​

Answer 1

(a) air to glass  =  19.47°

(b) glass to air = 48.28°

Given:

The refractive index of glass is 1.5.

The angle of incidence is 30°.

To find:

The angle of deviation for a ray of light travelling from,

(a) air to glass

(b) glass to air

Concept used:

Refractive index of glass × refractive index of air = 1

$\frac{sin(Angle \ of\ incident)}{sin(Angle\ of \ reflection))}$ = Refractive index

Explanation:

The angle of deviation for a ray of light travelling from,

(a) air to glass

The angle of incidence = 30°

$\frac{sin(Angle \ of\ incident)}{sin(Angle\ of \ reflection))}$ = Refractive index

$\frac{sin(30)}{sin(Angle\ of \ reflection)}$ = 1.5

Angle of reflection = 19.47°

The angle of deviation for a ray of light travelling from,

(b) glass to air

Refractive index of glass × refractive index of air = 1

                   Refractive index of air = $\frac{1}{1.5}$ = 0.67

The angle of incidence = 30°

$\frac{sin(Angle \ of\ incident)}{sin(Angle\ of \ reflection))}$ = Refractive index

$\frac{sin(30)}{sin(Angle\ of \ reflection)}$ = 0.67

Angle of reflection = 48.28°

To learn more...

1)Absolute Refractive Index of a Crown glass is 1.52 and that of alcohol is 1.36 calculate the refractive index of crown glass with respect to alcohol​

https://brainly.in/question/8646511

2)Refractive index has no units why?

https://brainly.in/question/178245