Question

If you were to magnify a cell 10,000-fold (typical of the magnification achieved using an electron microscope), how big would it appear? assume you are viewing a "typical" eukaryotic cell with a cellular diameter of 50 μm.

Answer 1

In this case i am supposed to use the formula of magnification as indicated in the here 

Magnification=size of the image divided by the size of the object

so in this case we have been given magnification and the size of the object

magnification=×10, 000 and size of the object=50 micrometer

size of the image=10000×50
                           =50,0000 micrometers