SSC
BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Fine adjustment
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Diaphragm
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Coarse adjustment
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Stage clips
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Detailed explanation-1: -The coarse adjustment knob is used ONLY with the low power (4X, 10X) objectives. When focusing under the 40X or 100X objective, ONLY use the fine adjustment, never the coarse adjustment.
Detailed explanation-2: -The coarse adjustment knob should not be used on high power because it will crack the slide. When do you use the fine adjustment knob? The fine adjustment knob is used to focus on the specimen when using the high power objective. Our microscopes have three objectives.
Detailed explanation-3: -Answer and Explanation: 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.