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A cubical transparent slab is used as a ...

A cubical transparent slab is used as a paper weight. What should be the minimum refractive index of the material of the slab so that letters below it are not visible from any of its vertical faces.

A

`sqrt(2)`

B

`sqrt(3)`

C

`sqrt(5)`

D

`sqrt(5)//sqrt(3)`

Text Solution

AI Generated Solution

To solve the problem of determining the minimum refractive index of a cubical transparent slab so that letters below it are not visible from any of its vertical faces, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Geometry of the Slab:** - Let the side length of the cube be denoted as \( L \). - The light must travel through the slab and exit from the vertical faces without being visible. ...
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