A microscope is focused on a mark on a piece of paper and then a slab of glass of thickness 3 cm of refractive index 1.5 is placed over the mark. How should the microscope be moved to get the mark in focus again?
Text Solution
Verified by ExpertsThe correct answer is:
D
: In the later case microscope will be focused for O’
So,it is required to be lifted by distance OO’. OO’ = real depth of O – apparent depth of O
(downwards)
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