A microscope is focussed on a mark on a piece of paper and then a slab of glass of…
Physics · Class 12 · CBSE — Ray Optics & Optical Instruments
A microscope is focussed 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?
- 4.5 cm downward
- 1 cm downward
- 2 cm downward
- 1 cm upward
Answer
(D) 1 cm upward
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