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A person with a normal near point $(25 cm)$ using a compound microscope with an objective of focal length 8.0 mm and an eye piece of focal length 2.5 cm can bring an object placed 9.0 mm from the objective in sharp focus. what is the separation between the two lenses ? calculate the magnifying power of the microscope ?

$\begin{array}{1 1} seperation\;between\;the\;two\;lenses=9.47\;cm\;M.p=88 \\ seperation\;between\;the\;two\;lenses=8.8\;cm\;M.p=94.7 \\ seperation\;between\;the\;two\;lenses=7.49\;cm\;M.p=88 \\ seperation\;between\;the\;two\;lenses=8.8\;cm\;M.p=74.9 \end{array} $

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