Physics · Optics, Nature of Light and Optical Instruments
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A beam of electrons can
- A
Reflect
- B
Refract
- C
Both
- D
None of these
An electron beam can be refracted at the interface between a plasma and a gas, much as light is refracted at an air-water interface. Electron diffraction occurs as a result of elastic scattering when the incident electrons do not lose their kinetic energy in their interactions with atoms. In some cases, however, even inelastically scattered electrons can be diffracted as a result of an elastic interaction.
Reflection occurs when a beam of electrons strikes a surface and bounces back, changing its direction. Electrons can reflect off surfaces such as metal plates, mirrors, or other electron-deflecting materials.
Refraction, on the other hand, occurs when a beam of electrons passes from one medium to another and changes direction due to a change in the medium's properties. Electrons can refract when transitioning between materials with varying electron densities or electric fields.
A beam of electrons can exhibit both reflection and refraction, similar to other particles or waves.
Tagged under Physics · Optics, Nature of Light and Optical Instruments · 2021