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← ScienceWhich mechanism causes spectral broadening when dye molecules undergo rapid dephasing?
A)Heisenberg Uncertainty Principle✓
B)Boltzmann Distribution tail
C)Raman scattering frequency shift
D)Fermi's Golden Rule variation
💡 Explanation
The Heisenberg Uncertainty Principle causes spectral broadening, because shorter lifetimes of excited states create greater uncertainty in energy via the Time-Energy Uncertainty relation; therefore, broadened spectral lines are observed, rather than discrete frequencies due to longer lived states.
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