How do you calculate the magnification of an image? For example, if the real size of a cell is 30um and the size of the cell in the textbook is 60mm, what is the magnification?

= size of image/ real size of object Can use the magnification triangle to work this out. Can also use the triangle to calculate each image size or object size, if you already have the scale of magnification.
Firstly convert both numbers into the same unit (mm).30um= 0.03mm (1mm=1000um)
magnification= 60/ 0.03 = 2000We know that the image in the textbook has been magnified 2000 times.