Question

In which type of microscopy is a beam of electrons used to scan the specimen, followed by the conversion of the excited electrons to a three-dimensional image?

A. Electron microscopy
B. Scanning tunneling microscopy
C. Fluorescence microscopy
D. Confocal microscopy

Answer 1

Electron microscopy uses a beam of electrons to scan the specimen and generate a three-dimensional image. It provides higher magnification and resolution than optical microscopy, allowing for detailed observations at the atomic level.

Step-by-step explanation:

The type of microscopy that uses a beam of electrons to scan the specimen, followed by the conversion of the excited electrons to a three-dimensional image is electron microscopy.

There are two main types of electron microscopy: transmission electron microscopy (TEM) and scanning electron microscopy (SEM). TEM passes electrons through a thin sample in a vacuum to visualize small structures, while SEM scans the specimen's surface to create a 3D image.

Electron microscopy provides much higher magnification and resolution than optical microscopy, allowing us to see details at the atomic level.