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Fluorescence occurs when

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Fluorescence occurs when Answer: A molecule returns to the electronic ground state from an excited singlet state by losing it's excess energy as a photon

Question context

This question is part of 🧬 Biochemistry within the broader 🧬 Medical Science subject and appears in the DemoPaper-Pakistan preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.