A thin biconvex lens of refractive index 3 2

Asked by admin @ 17/08/2021 in Physics viewed by 325 People

A thin biconvex lens of refractive index 3/2 is placed on a horizontal plane mirror

as shown in the figure. The space between the lens and the mirror is then filled with water ofrefractive index 483. It is found that when a point object is placed 15 cmLove the lens on its principal axis, the object coincides with its own image.On repeating with another liquid, the object and the image again coincide at adistance 25 cm from the lans. Calculate the refractive index of the liquid.

Answered by admin @ 17/08/2021

Explanation:

Let f1 be the focal length of convex lens; radius of curvature of each curved face is R. 1f1 = (m - 1) { 1R - (1-R) } = (μ - 1) 2R f1 = R2(μ-1) = R2 ...

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A thin biconvex lens of refractive index 3 2

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