Find the maximum angle of refraction when a light ray is refracted from glass `(mu= 1.50)` to air.

Explanation

To find the maximum angle of refraction when a light ray is refracted from glass (with a refractive index \( \mu = 1.50 \)) to air, we can follow these steps:

### Step 1: Understand the concept of critical angle
The critical angle is the angle of incidence in the denser medium (glass) at which the angle of refraction in the less dense medium (air) is 90 degrees. Beyond this angle, total internal reflection occurs.

### Step 2: Use Snell's Law
Snell's Law relates the angles of incidence and refraction to the refractive indices of the two media. It is given by the formula:
\[
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