An object viewed from a near point distance of 25cm, using a microscopic lens with magnification '6', gives an unresolved image. A resolved image is observed at infinite distance with a total magnification double the earlier using an eyepiece along with the given lens and a tube of length 0.6m, if the focal length of the eyepiece is equal to ___ cm.
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For simple microscope,
For compound microscope,
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