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Q: List the steps for focusing an object using the 40x objective lens?
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Describe how to relocate an object that is lost while viewing high powered objective?

The best way to relocate a lost object when using a high-power microscope is to raise the body tube, check the slide to make sure the object is still on it, and adjust the light source if necessary. Then, starting with the coarse adjustment knob start focusing on the object again.


How do you identify three person objective?

In a sentence using the "three persons objective" point of view, the subject of the sentence is acting upon the object. For example: "She saw him." Here, "she" is the subject acting upon "him," which is the object.


Will an object 1594 angstroms in diameter be visible with the light microscope using the 100X objective?

yes it is.


What is the BEST procedure for focusing a compound light microscope?

Begin by using the lowest power objective lens and then switching to the next highest power lens.


Initial focusing of any slide is done under the?

When using a microscope, the initial focusing of any slide is done under either the 4x or 10x objective. Once you have your subject in focus, you may make further adjustments.


When using the high power objective which focus knob do you use?

The fine adjustment knob is used with the power objective on the microscope. Since the objective is already at the highest objective possible for that microscope, using the coarse adjustment knob would focus to much on the object making the details harder to read. Using the fine adjustment knob, you are able to see the fine details within the object or organism you are studying. The higher the power, the finer the knob and the lower the objective, the coarser the knob and objective.


Why important to start focusing the lowest power objective?

You use the low power objective lens first to get your sample centered in the field of view.


Why should you always move the objective lens away from the slide when you're focusing a microscope?

If you move closer while looking thru the lens, there is a danger of cracking the slide, especially using coarse adjustment.


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?

the naswe is 400


What is the total magnification of an object observed through a 65x objective with a 10x eyepiece?

450x TM ( magnification of the ocular lens ( 10x) multiplied by the magnification from the objective lens ( 45x)= 450x TM ( total magnification)


What is the total magnification if you view an object using a 40x objective lens and the eyepiece of the microscope is at 5x magnifying power?

The total magnification would be 200x, since the total magnification is the magnification of the objective lens X the magnification of the eyepiece.


When using a microscope how much larger than normal does an object appear with lower power objective?

Not all microscopes have the same magnification for the lower power lens.