The total magnification of a specimen using the 40X objective is 400X. It can be calculated by multiplying the objective lens and ocular lens.
What is an objective lens?
The objective refers to the lens that gathers light from the sample being observed and then focuses the light rays in order to produce the resulting image.
The objective and ocular lenses are two different types of lenses and they are equally responsible for the total magnification of the resulting image.
For example, if we have 40X objective and 10X ocular, then the total magnification is equal to 40 X 10 = 400X.
Learn more about the objective lens here:
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