In Newton's ring experiment the diameter of bright ring is reduced to 0.8 of its value after introducing a liquid below the convex surface.calculate the refractive index at liquid.
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Expert's answer
2019-08-19T09:41:33-0400
We can write for radius of bright ring
rk=2n(2k−1)Rλ(1)
In our two cases
r1=2(2k−1)Rλ(2)
r2=2n(2k−1)Rλ(3)
According to the condition of the problem, we have
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