The refractive index of a glass slab is 1.5 . An air bubble is visible inside the slab. When vie...

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The refractive index of a glass slab is 1.5 . An air bubble is visible inside the slab. When viewed from one side, it seems \( 3.4 \mathrm{~cm} \) deep and when viewed from the other side, it seems to be \( 2.2 \mathrm{~cm} \) deep. What is the thickness of the glass slab?
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