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 step by step, we will use the concept of apparent height when viewing an object through a medium with a different refractive index.

### Step 1: Understand the Problem
We have a small pin fixed on a table top, and we want to determine how much it appears to be raised when viewed through a 15 cm thick glass slab. The refractive index (μ) of glass is given as 1.5.

### Step 2: Identify the Actual Height
The actual height of the glass slab (h) is given as 15 cm.

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