A microscope is focused on a mark on a paper and then a slab of glass of thickness 3 cm and 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:
B
Here, real depth of mark; 
apparent depth of mark, y = ?
refractive index, 
As 
Distance through which mark appears to be raised 
.
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