Length of most of the bacteria of medical impoance are about?
0.5-1 micron
1-3 micron
3-5 micron
5-10 micron
The limit of resolution with the unaided eye is about 200 microns bacteria being much smaller can be visualized only under magnification. Bacteria of medical impoance generally measures 0.2-1.5 um in diameter and about 3-5 um in length Ref: Ananthanarayan & paniker's Textbook of Microbiology 9th edition pg no 10
general microbiology