In a museum an old document is protected by a 3.25 cm thick glass plate directly...
In a museum an old document is protected by a 3.25 cm thick glass plate directly on top of the document. The refractive index of the glass is 1.65. How far behind the glass surface appears the image of the document when looking perpendicular on the glass plate?
Homework Answers
The angle of incidence is angle made by incident ray with normal.
In this case, angle of incidence is 0.
By Snell's law, angle of refraction is 0.
Thus, there is no change in depth.
Distance appeared = Thickness of glass = 3.25 cm.
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