An ink mark is made on a piece of paper. A glass slab of thickness 't' is placed on it. The ink mark appears to be raised up through a distance ' x ' when viewed at nearly normal i

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An ink mark is made on a piece of paper. A glass slab of thickness 't' is placed on it. The ink mark appears to be raised up through a distance ' x ' when viewed at nearly normal incidence. If the refractive index of material of glass slab is ' μ ' then thickness of glass slab ' t ' is given by

TestHub · Accepted Answer

The apparent shift x produced by a glass slab of thickness t and refractive index μ when viewed at nearly normal incidence is given by the formula: x = t ( 1 − μ 1 ​ ) x = t ( μ μ − 1 ​ ) Rearranging the formula to solve for the thickness t of the glass slab, we get: t = μ − 1 μx ​ Answer: ( μ − 1 ) μx ​

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