=t(1−41)=3(1−1⋅51)=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.…
NEET UG 2006 — Physics Optics
2006mcqmedium
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 ?
Official previous-year question
Held on 30 Apr 2006 · Verified 9 Jul 2026.
Options
- A
2 cm upward
- B
1 cm upward
- C
4.5 cm downward
- D
1 cm downward
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