A thin equiconvex lens of glass ( mu = 1.5) with radius of curvature 4m is placed on a horizontal plane mirror. When the space between the lens and mirror is filled with a liquid, an object held at a distance 6m vertically above the lens is found to coincide with its own image. What is the refractive index of the liquid.

A thin equiconvex lens of glass ( mu = 1.5) with radius of curvature 4

1.	A thin equiconvex lens of glass ( mu = 1.5) with radius of curvature 4m is placed on a horizontal plane mirror. When the space between the lens and mirror is filled with a liquid, an object held at a distance 6m vertically above the lens is found to coincide with its own image. What is the refractive index of the liquid.
Answer» SOLUTION :`MU =4//3`

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