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. By: Sunday|Published on: Jan 4|Categories: Physics WAEC| 0 comments A. 1.52 B. 1.68 C. 2.58 D. 1.82 Correct Answer: Option A A. 1.52 Users Also Read These:A glass plate 0.9cm thick has a reflective index of…A to eater to glass to air to water to glass to air.…A ray of light is incident at an angle of 30°on a…A ray of light is incident on an equilateral…Calculate the refractive index of the material of…SEE ALSO The factor which enables the ear to distinguish between a note played on different instruments is the?