Magnification (Edexcel GCSE Biology): Flashcards

Eyepiece lens mag. × objective lens mag.

$\frac{\text{image size}}{\text{real size}}$

Both measurements must have same units

$\times 10^{-3}$ m

$\times 10^{-6}$ m

$\times 10^{-9}$ m

$\times 10^{-12}$ m

Represent very large or very small numbers

10-30 μm

1-5 μm

20-300 nm

Around 20 nm

About 2 nm