Write the relation between angle of prism, angle of incidence and angle of emergence.

Explanation

To derive the relation between the angle of prism (A), angle of incidence (i), and angle of emergence (e), we can follow these steps:

### Step 1: Understand the Geometry of the Prism
- When light enters a prism, it bends due to refraction. The angle at which the light enters the prism is called the angle of incidence (i), and the angle at which it exits is called the angle of emergence (e). The angle between the two faces of the prism is known as the angle of the prism (A).

### Step 2: Define the Angle of Deviation
- The deviation (δ) is defined as the angle between the original path of the light ray (if it had not encountered the prism) and the final path of the light ray after passing through the prism.

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