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Quantum confinement effects become significant when the size of the particle is comparable to the

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Quantum Confinement begins exactly when: \( \text{Particle Dimension} \le \text{Exciton Bohr Radius} \). This turns continuous bands into discrete energy steps, shifting the material's properties toward those of an isolated atom.

Updated On: Jun 25, 2026

\( \text{Wavelength of visible light} \)
\( \text{Exciton Bohr radius} \)
\( \text{Mean free path of a gas molecule} \)
\( \text{Grain size of a metal} \)

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The Correct Option is B

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Quantum confinement effects become significant when the size of the particle is comparable to the

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The Correct Option is B

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