Find the lateral shift of a light ray while it passws through a parallel glass slab of thickness 10 cm places in air. The angle of incidence in air is `60^(@)` and the angle of refraction in glass is `45^(@)`.

Explanation

To find the lateral shift of a light ray passing through a parallel glass slab, we can follow these steps:

### Step 1: Understand the Geometry
We have a glass slab of thickness \( t = 10 \, \text{cm} \). The angle of incidence in air is \( \theta_1 = 60^\circ \) and the angle of refraction in glass is \( \theta_2 = 45^\circ \). The emergent ray will be parallel to the incident ray.

### Step 2: Calculate the Angle of Emergence
Since the slab is parallel, the angle of emergence will be equal to the angle of incidence, which is \( \theta_1 = 60^\circ \).

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