Q: 8.Explain what the coarse focus knob does and what the fine focus knob does. 9. What is different…
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Q: numerator and denominator mean in the visual acuity chart
A: Visual Acuity Test It is a series of diagnostic techniques used in the examination of eyes, the…
Q: ?Enumerate the objective lenses.3 *
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Q: Explain how the images are formed, along with the role of light andthe different powers of lenses.
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Q: Which objective is never used with the course focus adjustment knob?
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Q: II. Complete the following table: LENS N.A. MAGNIFICATION TOTAL MAGNIFICATION Eyepiece 10X Scanning…
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Q: OIL EMERSION IS REQUIRED FOR which lens
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Q: Why do you use immersion oil with 100X objective lens? O to increase image resolution O to lubricate…
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Q: Discuss the optics of imaging the source onto the retina.
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Q: Match the objective lenses with permissible behaviors: For some rows you’ll list more than 1…
A: Adjust focus using coarse adjustment knob- A.4X Adjust focus using the fine adjustment knob-B.10x
Q: Which defect of vision can be rectified using a concave lens?
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Q: What is the significance of using oil with the immersion lens and why can't oil be used with any…
A: An instrument that is used to see extremely small objects that cannot be seen by naked eyes is…
Q: Which objective lens has the least working distance?
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Q: When you are using the 40X objective you should never use the: O iris diaphragm O fine focus coarse…
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Q: Why is a normal eye not able to see clearly the objects placed closer than 25 cm?
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Q: What is the primary difference between the method of focusing used by the eye and by a camera?…
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Q: Why is it necessary to use oil in conjunction with the oil immersion lens and not with the other…
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Q: Match the lens (condenser, high-dry, low-power, ocular, or oil immersion) to its description.This…
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Q: Explain the Workings of an oil immersion lens.
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Q: What does the objective lens magnify
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Q: What objective lens did not cause the lines on Slide B to be blurred together?
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Q: how do you think increasing the index of refraction will change the path of the light ?
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Q: Why must the subject stand 20 feet from the Snellen eye chart to test distance vision?
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Q: Explain the limitation of the focal plane as exhibited with this slide.
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Q: Write M or B after each of the following to indicate if it is a monocular or binocular depth cue.…
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Q: What are the applications of ?contact lenses
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Q: What do you think would happen if you tried to view a slide using the oil immersion lens but forgot…
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Q: Why is it not irecommended to start with high dry or oil immersion lenses
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Q: Give the resolution of eyepiece, scanning objective, LPO, HPO and OIO
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Q: Why is it advisable to start first with the low-power lens when viewing a slide?
A: Low power lens :- They are useful for examining large specimens or surveying many smaller specimens.…
Q: Why are you unable to focus on images closer to your eye than the near point values you determined?
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Q: What was needed after you use the 100 x lens? O use Chemwipe to clean the lens O use water to clean…
A: We use oil while using a 100X lens to reduce refraction.
Q: What is the magnification power of the objective lenses?
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Q: Why must the angle of astigmatism be determined before the corrective power of the lenses ? the…
A:
Q: Match the lens (condenser, high-dry, low-power, ocular, or oil immersion) to itsdescription. Choices…
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Q: the TM when viewing the letter using 4X and 10X objective lens?
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Q: what happens when you change the objective lense
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Q: The purpose of the ocular lens is to O increase the light. magnify the image from the objective…
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Q: what happens to brightness of the field of view when you switch to the high power objective
A: MAGNIFICATION It is the process of enlarging the apparent size of an object. This property of…
Q: Why is it important to use immersion oil when using the 100X objective? What do you think would…
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Q: Which part of the human eye provides most of the refraction for the light raysentering the eye?
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Which lens requires the use of cedarwood oil? Why is it important to use oil when focusing under this lens?
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Solved in 2 steps
- What is the significance of using oil with the immersion lens and why can't oil be used with any other lens?What is the magnification power of the objective lenses? How does the eyepiece compare to the objective lens? What is a magnification power? Differentiate between the fine and the coarse adjustment knobs.Why must the angle of astigmatism be determined before the corrective power of the lenses ? the corrective power is determined first , it will be difficult to determine which are blurry the corrective power is determined first , will look blurry If the corrective power is determined first , all lines will look clear .
- What is the total magnification of 4x objective lens and diameter of field of view in micrometers?How can you improve contrast when viewing a specimen?. What should you do if you have difficulty focusing in high power?. Why is important to use the fine adjustment nob only when focusing while using the high dry objective lens?What is the relationship between the working distance of an objective lens and its magnification power?
- What is the DFV of a 40x objective lens if the DFV of a 10x objective lens is 3 mm? Express your answer in μ (micra)To obtain a 400X magnification image you may choose a 40X objective lens with a 10X projector lens, or a 20X objective lens with a 20X projector lens. What are the differences in their image quality?Match the lens (condenser, high-dry, low-power, ocular, or oil immersion) to its description.A diaphragm is used to regulate light passing through this lens.
