Which of the following particles is the lightest?
A. Nucleus
B. Electron
C. Proton
D. Meson
Answer: Option B
Solution (By Examveda Team)
An electron is a negatively charged subatomic particle.It can be either free or bound to the nucleus of an atom.
The invariant mass of an electron is approximately 9.109×10−31 kilograms,
This Question Belongs to Mechanical Engineering >> Power Plant Engineering
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