An air bubble trapped inside a rectangular glass slab (cuboid) appear at 2 cm from one side and at 3 cm from the other opposite side. If the refractive index of glass is 1.5, what is the actual width of the glass slab?

Explanation

To find the actual width of the glass slab with an air bubble trapped inside, we can follow these steps:

### Step 1: Understand the problem
We have a rectangular glass slab with an air bubble inside. The bubble appears at a distance of 2 cm from one side and at 3 cm from the opposite side. The refractive index of glass is given as 1.5.

### Step 2: Define the variables
Let:
- \( t \) = actual thickness of the glass slab
...