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When photons of energy 4.25 eV strike the surface of a metal A. The ejected photoelectrons have maximum kinetic energy (T(A) (expressed in eV) and de-...

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Atomic StructureDe Broglie hypothesis, uncertainty principle, photoelectric effectMEDIUMJEE Chemistry
When photons of energy 4.25 eV strike the surface of a metal A. The ejected photoelectrons have maximum kinetic energy (T(A) (expressed in eV) and de-Broglie wavelength ((A). The max kinetic energy of photoelectrons liberated from another Metal B by photons of enegy 4.2 eV is TB.Where TB= (TA1.5). If De-Broglie wave length of these photoelectrons B (B =2A), then which of the following is not correct **Options:** - **A.** The work function of A is 2.25 eV. - **B.** The work function of B is 3.7 eV - **C.** TA = 2.0 eV, - **D.** TB =0 .75 eV --- **Difficulty:** MEDIUM | **Chapter:** Atomic Structure | **Topic:** De Broglie hypothesis, uncertainty principle, photoelectric effect

Official Solution

## ✅ Correct Answer: **D** ### 📖 Detailed Explanation: **Solution:** **Analyzing each option:** (A) ✗ The work function of A is 2.25 eV.... (B) ✗ The work function of B is 3.7 eV... (C) ✗ TA = 2.0 eV,... (D) ✓ TB =0 .75 eV... **Correct Answer: (D)** **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 StructureDe Broglie hypothesis, uncertainty principle, photoelectric effectMEDIUMJEE Chemistry