Physics-
General
Easy
Question
A triangular prism of glass is shown in the figure. A ray incident normally to one face is totally reflected. If 
, the refractive index of glass is
- <1.41
- =1.41
- >1.41
- 1.732
The correct answer is: >1.41
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mean molecular wt of air =
and 
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Simplify 
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If 
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Maths-General
