A Postage Stamp Kept Below A Rectangular Glass Block Of R.i Is 1.5,when Viewed From Above ,appears To Be Raised By 10mm.calculate The Thickness Of Glass Block? - ConceptEra

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Question

A postage stamp kept below a rectangular glass block of r.i is 1.5,when viewed from above ,appears to be raised by 10mm.calculate the thickness of glass block?

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