Question

A microscope is focused on the upper surface of a glass plate. A second plate is then
placed over the first. In order to focus on the bottom surface of the second plate, the
microscope must be raised 1 mm. In order to focus on the upper surface, it must be raised
2 mm further. Find the index of refraction of the second plate,
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Answer 1

Answer:Yes it must be raise

Explanation: because it is so important.