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How would you estimate the size of object viewed under high power objective lens 40 times if you were given the size of the field diameter when using low power objective lens 4 times?
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∙ 9y ago
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∙ 9y ago
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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.
If a dark field condenser causes all light rays to bypass the objective where does the light come from that makes an object visible in a dark field?
Oblique rays that strike the object. Oblique rays strike the object being viewed, illuminating the object and reflect light rays up through the objective.
Why should you never allow an objective lens to touch the slide?
because you can get it dirty, or you could move the object being viewed to a bad position.
Why should you watch from the slide before you lower the objective of your microscope?
Movements viewed through the microscope are exaggerated quite a bit. As such, it's best to attempt to line up the object on the slide by looking at the slide directly, rather than through the objective.
How does the mircoscope work?
The microscope works because of two lenses (ocular and objective). The objective lens magnifies the object and produces a real image. This image is projected to the ocular lens and produces the virtual image, which is the one that the eye views. More specifically, light from substage bounces off a mirror and illuminates the object on the slide being viewed on the stage. The light is then bent into a parallel path and travels through the microscope tube (through the objective lens). Then the light is bent again into a small focus for the eye to view the magnified object through the ocular lenses. Switching the amount the object is magnified by switching the objective lens changes how much the light is bent.
How are you going to determine the magnification of an object viewed under a microscope?
To determine the total magnification of an object being viewed under a microscope, multiply the magnification of the ocular lens by that of the objective 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.
What does the lens do in a microscope?
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.
What do the objectives do in a microscope?
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.
What is the angular size of circular object with a 2 inch diameter viewed from a distance of 4 yards?
It is 0.8 degrees.
What is the angular size of a circular object with a inch diameter viewed from a distance of 2 yards?
It is approx 0.8 degrees.
What is the angular size of a circular object with a 2 inch diameter viewed from a distance of 4 yards.?
It is 0.8 degrees.
If a dark field condenser causes all light rays to bypass the objective where does the light come from that makes an object visible in a dark field?
Oblique rays that strike the object. Oblique rays strike the object being viewed, illuminating the object and reflect light rays up through the objective.
Why should you never allow an objective lens to touch the slide?
because you can get it dirty, or you could move the object being viewed to a bad position.
How do objects appear when they are viewed throungh a microscope?
The object seems to us like we are seeing with our naked eyes and it is in front of us but it is near to objective lens which has high magnification power through which it made the size of object very big than real one.
How does the lens system change the image as viewed through the microscope?
It is specially set up to produced a magnified image of an object placed before its objective lens.
Why should you watch from the slide before you lower the objective of your microscope?
Movements viewed through the microscope are exaggerated quite a bit. As such, it's best to attempt to line up the object on the slide by looking at the slide directly, rather than through the objective.
