What is meant by the ""total magnification"" of a microscope? How do you calculate it?

Total magnification is the amount of magnification that can be achieved when all the optics involved in the magnification by the apparatus being used is taken into account.

Explanation:

Total magnification is the amount of magnification that can be achieved when all the optics involved in the magnification by the apparatus being used is taken into account. For example when an object is viewed under a microscope with just ocular and objective lenses, the object is magnified to it maximum magnification using both the ocular lens and objective lens and the total magnification can be calculated by multiplying the power of the objective lens and the power of the eye piece.

Total magnification = power of objective lens x power of eyepiece