In Newton s ring experiment, the diameter of the 10th ring changes fro – McqOptions

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1.	In Newton s ring experiment, the diameter of the 10^th ring changes from 1.40 to 1.23 cm when a liquid is introduced between the lens and glass plate. What is the refractive index of the liquid?
A.	1.05
B.	1.15
C.	1.25
D.	1.35
Answer» D. 1.35

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