THE CELL
STRUCTURE AND FUNCTION OF THE CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Fine
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Large
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Coarse
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Small
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Detailed explanation-1: -to adjust the image at each of the magnifications. CAUTION: NEVER, EVER, use the coarse adjustment knob with the high power objective. This could break the lens. Multiply the power of the ocular lens, by the power of the objective lens.
Detailed explanation-2: -If you focus the high power objectives with the coarse focus knob, then you risk slamming the objective into the slide, risking the damage of both.
Detailed explanation-3: -If a student uses the coarse focus knob when the 10X (yellow) and 40X (blue) objectives are in place the student will definitely lose the view of the object being served and may damage the lens or sample.
Detailed explanation-4: -It is important to remember that under NO circumstance should you use the coarse focus knob when viewing a specimen under high power! If you cannot get the object in focus using the fine adjustment, something is wrong and the problem must be resolved first!