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 ?
Options:
Answer:
B
Solution:
$= t (1 - \frac{1}{4}) = 3 (1 - \frac{1}{1 \cdot 5}) = 1 cm$

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 ?

Options:

Answer:

B

Solution:

$= t (1 - \frac{1}{4}) = 3 (1 - \frac{1}{1 \cdot 5}) = 1 cm$

TestHub · Accepted Answer

= t ( 1 − 4 1 ​ ) = 3 ( 1 − 1 ⋅ 5 1 ​ ) = 1 cm

Physics - Geometrical Optics Question with Solution | TestHub

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