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A certain dye absorbs light of wavelength 4500 Ao and then emits fluorescence light of 5000 Ao. Assuming that, under given conditions 50% of the absor...

December 20, 2025
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Atomic StructureIntro, Dalton's theory, discharge tube & oil drop experiments, Rutherford scatteringEASYJEE Chemistry
A certain dye absorbs light of wavelength 4500 Ao and then emits fluorescence light of 5000 Ao. Assuming that, under given conditions 50% of the absorbed energy is re-emitted out as fluorescence. Calculate the ratio of quanta emitted to the number of quanta absorbed? **Options:** - **A.** 0.55 - **B.** 2.1 - **C.** 1.8 - **D.** 0.75 --- **Difficulty:** EASY | **Chapter:** Atomic Structure | **Topic:** Intro, Dalton's theory, discharge tube & oil drop experiments, Rutherford scattering

Official Solution

## ✅ Correct Answer: **A** ### 📖 Detailed Explanation: **Solution:** **Analyzing each option:** (A) ✓ 0.55... (B) ✗ 2.1... (C) ✗ 1.8... (D) ✗ 0.75... **Correct Answer: (A)** **Key Concept:** Apply fundamental principles of atomic structure to identify the correct option. --- *This is an official solution provided by Chem Mantra. For more chemistry questions and solutions, explore our [question bank](/courses).*

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Atomic StructureIntro, Dalton's theory, discharge tube & oil drop experiments, Rutherford scatteringEASYJEE Chemistry