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The total magnification would be 200x, since the total magnification is the magnification of the objective lens X the magnification of the eyepiece.
The magnification, or power, at which a telescope is operating is a function of the focal length of the telescope's main (objective) lens (or primary mirror) and the focal length of the eyepiece employed.
That depends on the eyepiece, a 9mm eyepiece will have more magnification than a 22mm eyepiece.
On a the microscope I use, the ocular (eyepiece) has a magnification power of 10x. The 'low' (or 'scanning') objective lens is 4x, the 'medium' has a power of 10x, and the 'high' has a power of 40x. Multiply the ocular by the lens you're using to get your 'total magnification.' TIP: Only use the coarse adjustment knob while on 'low' power, then use the fine adjustment. Why? If you use the coarse adjustment knob on 'medium' or 'high,' there's a good chance you'll crack your slide. -BugCrunch
50x
Magnification
The eyepiece is usually 10x, so multiply the objective by 10 to get true magnification
The total magnification would be 200x, since the total magnification is the magnification of the objective lens X the magnification of the eyepiece.
magnification
Divide the focal length of the objective lens by the focal length of the eyepiece.
20x objective
The magnification of the microscope
One can obtain a total magnification of 400x while using an objective lens of 40x. Such a lens should be used along an eyepiece of 10x.
The standard microscope is that the eyepiece is 10x magnification, and three types of powered magnification helps it magnify even more. Low power is 4x, Medium power is 10x, and High power is 40x. Eyepiece and Low power is 40x, Eyepiece and Medium power is 100x, and Eyepiece and High power is 400x magnification in revolance to the naked eye.
The general formula for Total maginifcation Tm is: Tm= Me x Mob where Me is the magnification produced by the eyepiece and Mob is the magnification produced by the objective.
a telescope's magnification is calculated as the ratio of the focal length of the primary objective to the focal length of the eyepiece. Since a telescope is defined by the primary objective, this part of it is essentially unchangeable. Therefore, the way to increase magnification is to decrease the focal length of the eyepiece. For example, a 1000mm objective and a 25mm eyepiece yields a magnification of (1000/25) 40x. Changing the eyepiece to a 10mm eyepiece increases magnification to (1000/10) 100x.
Using a 10X eyepiece, a student would need to use a 10X objective to have a final 100X magnification. 10 X 10 = 100X