Verified answer

The correct answer is 90°.

Given: Refractive index of glass surface = [tex]\sqrt{3}[/tex].

Angle of incidence = 60°.

To Find: Angle between the refracted and reflected rays.

Solution:

As we know Snell's law.

[tex]u_{1} sin i=u_{2} sinr[/tex]

Here [tex]u_{1}[/tex] is refractive index of air = 1

[tex]u_{2}[/tex] is refractive index of glass surface = [tex]\sqrt{3}[/tex]

∡ i is angle if incidence = 60°

∡ r is angle of refraction = r

By Snell's law

[tex]1sin60=\sqrt{3}sinr\\ \frac{\sqrt{3} }{2} =\sqrt{3} sinr\\ sinr=\frac{1}{2}[/tex]

r = 30°.

Hence, the angle between refracted and reflected ray is 90°.

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