Answer the Question?
Q 9.26 (e) When viewing through a compound microscope, our eyes should be positioned not on the eyepiece but a short distance away from it for best viewing. Why? How much should be that short distance between the eye and eyepiece?
When we view through a compound microscope, our eyes should be positioned a short distance away from the eyepiece lens for seeing a clearer image. The image of the objective lens in the eyepiece lens is the position for best viewing. It is also called "eye-ring" and all reflected rays from lens pass through it which makes it the ideal position for the eye for the best view.
When we put our eyes too close to the eyepiece lens, then we catch the lesser refracted rays from eyes, i.e. we reduce our field of view because of which the clarity of the image gets affected.