A microscope is focussed on a mark on a piece of 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…

Question

A microscope is focussed on a mark on a piece of 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?.

Accepted Answer

Correct answer: B. (b): Apparentdepth = r e a l d e p t hμ= 31.5 =2 c m As image appears to be raised by 1 cm, therefore, microscope must be moved upwards by 1 cm.

$A microscope is focussed on a mark on a piece of paper and then a slab of glass of thickness 3 cm and refractive index 1.5 is placed over the mark. How should the microscope be moved to get the mark in focus again?.$

Solution

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