Answer:
28.9°
Explanation:
Parameters given:
Angle of incidence, i = 40°
Refractive index, n = 1.33
Refractive index is the ratio of the sine of the angle of incidence, i, and the sine of the angle of refraction, r :
[tex]n =\frac{sin(i)}{sin(r)}[/tex]
Therefore:
=> [tex]1.33 = \frac{sin40}{sin(r)} \\\\\\sin(r) = \frac{0.6428}{1.33}\\ \\\\sin(r) = 0.4833\\\\\\r = sin^{-1}(0.4833)[/tex]
r = 28.9°
The angle of refraction is 28.9°.
