A microscope is focused on a coin lying at the bottom of a beaker. The microscope is now raised up by $1\ cm$. To what depth should the water be poured into the beaker so that coin is again in focus? (Refractive index of water is $\frac{4}{3}$)

Question

Dr. Abubacker · Accepted Answer

(d) Suppose water is poured up to the height $h,$
So $h\left( 1 - \frac{1}{\mu} \right) = 1 \Rightarrow h = 4\ cm$

Q. A microscope is focused on a coin lying at the bottom of a beaker. The microscope is now raised up by $1\ cm$. To what depth should the water be poured into the beaker so that coin is again in focus? (Refractive index of water is $\frac{4}{3}$)

Explanation

Reviewed by Dr. Abubacker

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