An air bubble in a glass slab with a refractive index of (near-normal incidence) is deep when viewed from one surface and deep when viewed from the opposite face. What is the thickness (in cm) of the slab?
Step 1: Given
Apparent depth from one side:
Apparent depth from another side:
Step 2: Formula Used
Where is the apparent depth, is the real depth and is the refractive index.
Step 3: Find the real depths
Calculate the real depth from the first side by using the formula.
Calculate the real depth from another side by using the formula.
Step 3: Find the thickness of the slab
Calculate the thickness of the slab by adding both the real depths.
The thickness (in cm) of the slab is .