Answer:
26.7°
Explanation:
Angle of incidence, i = 54°
refractive index of glass with respect to air, n = 1.8
Let r be the angle of refraction.
By use of Snell's law
[tex]n=\frac{Sini}{Sinr}[/tex]
By substituting the values, we get
[tex]1.8=\frac{Sin54}{Sinr}[/tex]
[tex]1.8=\frac{0.809}{Sinr}[/tex]
[tex]Sinr=\frac{0.809}{1.8}[/tex]
Sin r = 0.449
r = 26.7°
Thus, the angle of refraction in the glass is 26.7°
