Answer :
As eyepiece magnifies 10times, objective lens should be 100x, so that the total magnification =10 *100=1000
eye-level micrometer
An ocular micrometer is a glass disk with a ruled scale that fits in a microscope eyepiece and is used to measure the size of objects that have been magnified. The amount of magnification determines the actual length of the markings on the scale.
The objective lens being used to examine the specimen determines the distance between the etched lines, even if the ocular micrometer is mounted in one of the microscope's eyepieces. The precise distance between the lines of an ocular micrometer must be measured using a stage meter. On a stage micrometer, the engraved lines are spaced by precisely 0.01 mm (or 10 m).
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