(a) Show using a proper diagram how unpolarised light can be linearly polarised by reflection from a transparent glass surface.
(b) The figure shows a ray of light falling normally on. the face AB of an equilateral glass prism having refractive index 3/2, placed A in water ofrefractive index 4/3. Will this ray suffer total internal reflection on striking the face AC? Justify your answer.

Explanation

### Solution:

**(a)** To show how unpolarized light can be linearly polarized by reflection from a transparent glass surface, we can follow these steps:

1. **Understanding Unpolarized Light**: Unpolarized light consists of waves vibrating in multiple planes. When it strikes a surface, some of the light is reflected and some is refracted.

2. **Incident Ray**: Draw a diagram with a glass surface and a normal line (perpendicular to the surface). Let the incident ray strike the glass surface at an angle θ.

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