The ocular lens in a standard compound microscope is usually 10x magnification. The total magnification is found by multiplying the ocular lens by the objective lens, so a 40x objective with a 10x ocular lens gives 400x total magnification.

Quick Scoop

  • Typical ocular lens magnification: 10x.
  • Common range: about 10x to 25x , though some setups can go higher.
  • Formula: total magnification = ocular magnification x objective magnification.

If you want, I can also explain the difference between ocular lens , objective lens , and total magnification in one simple diagram-style breakdown.