INTRODUCTION
CELL STRUCTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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low objective lens
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medium objective lens
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high objective lens
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super extra high power lens
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Detailed explanation-1: -On most light microscopes, this will be the 10 times objective lens. It’s important to start with the lowest magnification possible so you can easily find the specimen on the slide and gradually focus it before increasing the magnification to see the specimen more closely.
Detailed explanation-2: -When using a light microscope it’s important to start with the low power objective lens as the field of view will be wider, increasing the number of cells you are able to see. This makes it easier to find what you’re looking for.
Detailed explanation-3: -The depth of focus is greatest on the lowest power objective. Each time you switch to a higher power, the depth of focus is reduced. Therefore a smaller part of the specimen is in focus at higher power. Again, this makes it easier to find an object on low power, and then switch to higher power after it is in focus.