Tue December 27, 2011 By: Smeeksha Bali

sir could you please tell me if there are any two mediums that have the same optical density ?if so name them.

Expert Reply
Wed December 28, 2011
glyserine and glass nearly have same optical density as well as same refractive index. so if we keep a lens made up of glass in a glass filled with glyserine, we can not see it. as light does not bend its path inside the glass so we will only see glass filled with glyserine but not the lens inside.
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