Question:
The BCS theory explains
The BCS theory explains
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BCS theory explains superconductivity through formation of Cooper pairs at low temperature.
Updated On: May 7, 2026
- Laser action
- Pyroplasticity
- Semiconductivity
- Superconductivity
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The Correct Option is D
Solution and Explanation
BCS theory is one of the most important theories in solid state physics.
BCS stands for:
\[
\text{Bardeen-Cooper-Schrieffer}.
\]
It explains the microscopic mechanism of superconductivity.
According to BCS theory, at low temperature, electrons form pairs called Cooper pairs.
These Cooper pairs move through the lattice without ordinary electrical resistance.
This explains why superconductors show zero electrical resistance below critical temperature.
BCS theory does not explain laser action or pyroplasticity.
It is also not a theory of ordinary semiconductivity.
Therefore, scientifically, BCS theory explains:
\[
\text{Superconductivity}.
\]
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