The ratio of thickness of plates of two transparent mediums A and B is – McqOptions

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1.	The ratio of thickness of plates of two transparent mediums A and B is 6 : 4. If light takes equal time in passing through them, then refractive index of B with respect to A will be [UPSEAT 1999]
A.	1.4
B.	1.5
C.	1.75
D.	1.33
Answer» C. 1.75

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