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Because that lens (it does not HAVE to be a 100x lens - other lens magnifications are also available in oil immersion constructions) is made to be in contact with a drop of special oil which covers the specimen. The oil has the same index of refraction as the front lens glass and that way a different optical construction can be used.
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Why is it not safe to remove slides from the microscope when 100x object is in place?
Because the objective touches the lens.
What does the objective lens in a microscope do?
The objective lens in a microscope helps to magnify the object being viewed on the slide. The objective lens can be rotated to change the magnification of the lens and yield a different view.
How did the lens get its name?
The lens on a microscope got their name from a lentil bean.(The lens on a microscope look like a lentil bean)
What is the part of the microscope that allows the objective lens to swivel?
It is called the revolving nosepiece, or simply the nosepiece.
Where do you find the scanning power objective on a microscope?
The scanning power objective relates to the objective lens. Most microscopes provide two or more objective lenses to give a choice of magnification power. Some also include an oil immersion lens for even greater magnification.
What microscope objective is best to study bacteria?
The most satisfactory way to study bacterial morphology 40x objective.
What objective focuses closest to the slides?
The oil immersion lens @100x
What mirror is used for oil immersion?
100x lens is used with oil immersion
What is the magnification of a high power objective?
The oil immersion lens or objective has power 90X-100X and an eyepiece lens generally in light microscope comes with 10X so total magnification of oil immersion lens is 100X10 = 1,000
What objective focuses closest to slide?
The oil immersion lens @100x
Which objective focuses closest to the slide when it is in focus?
The objective lens that focuses closest to the slide is 100x, it has the longest lens so the highest power. Be careful not to crack the slide and make sure you use oil if it is an oil immersion lens.
Should you store the microscope with the oil immersion lens in position?
no
Should you leave oil on a 100x objective lens when you put the microscope away?
No, it is best to clean the oil from the 100x objective lens using lens paper or a clean cloth specifically made for cleaning lenses before putting the microscope away. Leaving oil on the lens can attract dust and debris, leading to a blurry image and potentially damaging the lens.
What is the function of the oil used with the oil immersion lens?
So that you do not scratch the lens because at 100x magnification it is very very close to the slide.
What is the maximum magnification of the dark-field microscope?
Most go up to 1000x as it is light field microscopy. The ocular lens (the one that you look into) is 10x, but there are different objectives to focus on the specimen that you rotate to chose. The lowest is usually 4x, then 10x, 40x, and then 100x. Multiply ocular lens (10x) X objective lens you are using (ex: 40x) = Total 400x Oil immersion drop is used ONLY on the 100x objective.
Does the microscope get stored with oil immersion lens in position over the stage?
no
The total magnification achieved when using a 100x oil immersion lens with a 10x binocular eyepiece is?
1000X magnification
