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One can calculate the total magnification of a microscope by multiplying the magnification of the eye piece by the magnification of the main scope. For a compound microscope one must multiply each eye piece magnification.
the power of the ocular lens multiplied by the magnification of the objective lens
Multiply the magnification of the eyepiece - by the magnification of the object lens. For example - if the eyepiece is labeled 10x, and the object lense is 12x... then the total magnification is 120x
Field diameter of lens B equals field diameter of lens A times total magnification of lens A divided by total magnification of lens B
To calculate magnification , multiply mag.Power of both lenses 15 x 30 = 350
The total magnification is equal to the magnification of the eyepiece multiplied by the magnification of the objective lens. So in this case the objective lens would need to be 100X.
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.
To determine the magnification of the eyepiece on a microscope take the total magnification for the microscope and divide it by the total magnification of the objective lens. The answer is what the magnification is for the eyepiece.
They enables you to adjust the viewing for your own eyes
The ocular lens are 10x magnification. Objective lens are 4x, 10x, 40x, 100x magnification. So once an objective lens is selected, the total magnification would be given by its product with the 10x magnification of the ocular lens. For example, if objective lens selected is 40x, total magnification would be: (10x)(40x)=400x total.
The total magnification is the object magnification for example 4x,10x etc. times eyepiece magnification usually 10x and you get the total magnification. The objective lens magnification is the lens right above the slide usually 4x,10x etc.
LPO has a 10x magnification. HPO has a 40x magnification. OIO has a 100x magnification. LPO has the least magnification, and OIO has the largest.