The ray of light is incident at an angle of `45^(@)` on a glass surface. What will be the critical angle of the glass when placed in air if the light ray is deviated by `12^(@)` ?

Explanation

To solve the problem, we need to determine the critical angle of glass when placed in air, given that a ray of light is incident at an angle of 45° and is deviated by 12°.

### Step-by-Step Solution:

1. **Understanding the Geometry of the Problem**:
- A ray of light is incident on the glass surface at an angle of 45°.
- The deviation of the ray after refraction is given as 12°.
- The angle of refraction can be calculated as:
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