what do you mean by ocular lens magnification? is that using the fine focus knob ?
Added by Xavier P.
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" - Ocular lens magnification refers to the power of the lenses in the eyepieces of a microscope. These lenses are responsible for the initial magnification of the specimen being viewed. Show more…
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Sri K.
Brightfield Microscopy (continued) B. Matching Questions Match the lens (condenser, high-dry, low-power, ocular, or oil immersion) to its description. Choices may be used more than once. 1. This objective lens provides the highest magnification. 2. This objective lens provides the second-highest magnification. 3. This objective lens provides the lowest magnification. 4. This objective lens has the shortest working distance. 5. The coarse focus knob should be adjusted only when using this objective lens. 6. This lens collects and focuses light from the lamp onto the specimen on the slide. 7. This lens, also known as the eyepiece, often comes in pairs. 8. Diopter adjustments can be made to this lens. 9. A diaphragm is used to regulate light passing through this lens. C. True-False 1. Acetone is the safest solvent for cleaning an objective lens. 2. Only lint-free, optically safe tissue should be used to wipe off microscope lenses. 3. The total magnification capability of a light microscope is only limited by the magnifying power of the lens system. 4. The coarse focus knob can be used to adjust the focus when using any of the objective lenses. 5. Once focus is achieved at one magnification, a higher-power objective lens can be rotated into position without fear of striking the slide. D. Multiple Choice Select the answer that best completes the following statements. 1. The resolving power of a microscope is a function of a. the magnifying power of the lenses. b. the numerical aperture of the lenses. c. the wavelength of light. d. Both (a) and (b) are correct. e. Both (b) and (c) are correct. 2. The coarse and fine focus knobs adjust the distance between a. the objective and ocular lenses. b. the ocular lenses. c. the ocular lenses and your eyes. d. the stage and the condenser lens. e. the stage and the objective lens. 3. A microscope that maintains focus when the objective magnification is increased is called a. binocular. b. myopic. c. parfocal. d. refractive. e. resolute.
Adi S.
Magnification is the process of enlarging the appearance of an object. We calculate the magnification of an object by indicating the fold change in size. So if something appears to be double the size of the real item, then it is obviously magnified 2X. Because there is a magnification by the eye-piece (ocular lens), as well as the objective lenses, our final magnification of an item is the product of those two lenses. The lowest magnification objective lens (usually 4X or 5X) is referred to as a scanning lens. There is also usually a low power lens at 10X and a higher magnification lens at 40X. There may be a higher magnification lens at 100X but these usually require oil to function properly and are often reserved for microbiology labs. • What is the power of the ocular lens? • We can calculate that as: Magnification total = Magnification objective X Magnification ocular • With this in mind, fill in the following table:
Supreeta N.
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