Physics · 2020
JEE Main · 4 September 2020, Shift 1 · Q24
In a compound microscope, the magnified virtual image is formed at a distance of 25 cm from the eye-piece. The focal length of its objective lens is…
In a compound microscope, the magnified virtual image is formed at a distance of $\displaystyle 25$ cm from the eye-piece. The focal length of its objective lens is $\displaystyle 1$ cm. If the magnification is $\displaystyle 100$ and the tube length of the microscope is $\displaystyle 20$ cm, then the focal length of the eye-piece lens (in cm) is
\_\_\_\_.
Official answer
6.25
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.