A small pin fixed on a table top is viewed from above from a distance of `50 cm`. By what distance would the pin appear to be raised, if it be viewed from the same point through a `15 cm`. Thick glass slab held parallel to the table ? `mu` of glass `1.5` Does the answer depend on location of the slab ?

Explanation

To solve the problem, we need to determine how much the pin appears to be raised when viewed through a 15 cm thick glass slab with a refractive index (μ) of 1.5.

### Step-by-Step Solution:

1. **Identify the Given Values**:
- Thickness of the glass slab (h) = 15 cm
- Refractive index of glass (μ) = 1.5

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