A ray of light travels from air into another medium, making an angle of 1 = 45.0

Question

A ray of light travels from air into another medium, making an angle of 1 = 45.0° with the normal as in the figure below.

(a) Find the angle of refraction 2 if the second medium is diamond. (The index of refraction for diamond is 2.419.)
_____________ °

(b) Find the angle of refraction 2 if the second medium is carbon disulfide. (The index fo refraction for carbon disulfide is 1.628.)
_______________ °

(a) Find the angle of refraction 2 if the second medium is water. (The index of refraction for water is 1.333.)
________________ °

Explanation / Answer

using snell's law

n1sintheta2 = n2sintheta2

theta1 = 45 degree

n1 = 1

theta2 = sin^-1(1*sin45/n2)

part a )

n2 = 2.419

theta2 = 17 degree

part b )

n2 = 1.628

theta2 = 25.74 degree

part c )

n2 = 1.333

theta2 = 32 degree

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