A microscope has an objective of 5 mm focal length and eye piece of 30 mm focal length and the magnification is 250 Then the

Question

A microscope has an objective of 5 mm focal length and eye piece of 30 mm focal length and the magnification is 250 Then the length of the microscope for normal adjustment will be 1 150 mm 2 50 mm 3 100 mm 4 75 mm

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