Which Microscope is Used to See Detail of a 300-Nm

Question

Which microscope is used to see detail of a 300-nm virus?
A)fluorescence microscope
B)phase-contrast microscope
C)darkfield microscope
D)DIC microscope
E)electron microscope

Accepted Answer

The wavelength of visible light is too large to resolve structures smaller than about 200 nm. Electron microscopes use a beam of electrons, which have much shorter wavelengths than visible light, allowing them to achieve much higher resolution and to visualize structures as small as 0.1 nm. Therefore, an electron microscope would be the best choice to see detail of a 300-nm virus.