Question

1. Using Snell’s law, determine the constant when the angle of incidence and the angle of refraction are: a) 50˚ and 30˚ b) 30˚ and 18˚ c) 60˚ and 38˚

2. a) What is the angle of refraction in a medium if the angle of incidence in air is 48˚ and the index of refraction of the medium is 1.58? b) What is the angle of incidence in a medium in the case where the angle of refraction in air is 40˚ and the index of refraction of the medium is 1.58?

3. A ray of light passes from air into water at an angle of incidence of 50˚. What is the angle of refraction? (HINT: You will need to use the sin1 function on your calculator).

Answer 1

$n=\frac{\sin\alpha}{\sin\beta},$

a)

$n_1=1.53,$

b)

$n_2=1.62,$

c)

$n_3=1.41.$