A ray of light passing through a prism having refractive index `sqrt2` suffers minimum deviation. It is found that the angle of incidence is double the angle of refraction within the prism. What is the angle of prism?

Explanation

To solve the problem step by step, we will follow the information provided in the question and apply the relevant concepts of optics.

### Step 1: Understand the Given Information
We have a prism with a refractive index \( \mu = \sqrt{2} \). The ray of light passing through the prism suffers minimum deviation, and it is given that the angle of incidence \( I \) is double the angle of refraction \( r \) within the prism.

### Step 2: Set Up the Relationship
From the problem, we know:
\[
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