JEE Mains 04-Sep-2020 Shift 1 Solved Paper

In a compound microscope, the magnified virtual image is formed at a distance of 25 cmfrom the eye-piece. The focal length of its objective lens is 1 cm. If the magnification is 100 and the tube length of the microscope is20 cm, then the focal length of the eye-piecelens (in cm ) is _______.