A microscope is focused on a mark on a table, when the mark is covered by a plate of glass 2m thick, the microscope has to be raised 0.67cm for the mark to ...

Assessment: JAMB UTME - Physics - 2019 Subject: Physics

Question 1 Report

A microscope is focused on a mark on a table, when the mark is covered by a plate of glass 2m thick, the microscope has to be raised 0.67cm for the mark to be once more in focus. Calculate the refractive index.
Answer Details

R = th = 2cm, d = 0.67cm

n = RA = RR.d = 22-0.67 = 1.52

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