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Name the unit of work done, used in subatomic scale.
Name the unit of work done, used in subatomic scale.
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When dealing with atomic or nuclear physics, always expect energies to be expressed in electron-volts (eV) or its multiples like keV (kilo-eV), MeV (mega-eV), and GeV (giga-eV).
Updated On: Mar 10, 2026
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Solution and Explanation
Step 1: Understanding the Concept:
In subatomic physics (dealing with atoms and particles), the Joule is often too large a unit to be practical.
Step 2: Detailed Explanation:
The electron volt (eV) is defined as the amount of kinetic energy gained or lost by a single electron accelerating from rest through an electric potential difference of one volt.
Relationship with SI unit:
\(1 \text{ eV} = 1.602 \times 10^{-19} \text{ Joules} \).
Step 3: Final Answer:
The unit of work/energy used in the subatomic scale is the electron volt (eV).
In subatomic physics (dealing with atoms and particles), the Joule is often too large a unit to be practical.
Step 2: Detailed Explanation:
The electron volt (eV) is defined as the amount of kinetic energy gained or lost by a single electron accelerating from rest through an electric potential difference of one volt.
Relationship with SI unit:
\(1 \text{ eV} = 1.602 \times 10^{-19} \text{ Joules} \).
Step 3: Final Answer:
The unit of work/energy used in the subatomic scale is the electron volt (eV).
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