Question
Write a note on strong and weak nuclear force.

Answer

$1.$Strong nuclear force: The strong force which binds protons and neutrons $($nucleons$)$ together in the nucleus of an atom is called strong nuclear force.
Characteristics of strong nuclear force:
- It is a very strong attractive force.
- It is a short range force of the order of $10^{-14} m.$
- it is charge independent.
$2.$ Weak nuclear force: The force of interaction between subatomic particles which results in the radioactive decay of atoms is called weak nuclear force. Characteristics of weak nuclear force:
- It acts between any two elementary particles $($pair of subatomic particles$).$
- It is a stronger force than gravitational force.
- It is much weaker than electromagnetic force or strong nuclear force.
- It is a short range force of the order of $10^{-16}m.$

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