A horizontal ray of light is incident on a solid glass sphere of radius R and refractive index `mu` . What is net deviation of the beam when it emerged from the other side of the sphere?

Explanation

To solve the problem of finding the net deviation of a beam of light passing through a solid glass sphere, we can follow these steps:

### Step 1: Understand the Geometry of the Problem
We have a solid glass sphere with radius \( R \) and refractive index \( \mu \). A horizontal ray of light is incident on the sphere. We need to analyze how this ray behaves as it enters and exits the sphere.

**Hint:** Visualize the ray's path as it enters and exits the sphere. Draw a diagram if necessary.

### Step 2: Identify the Angles of Incidence and Refraction
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