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Calculate the wavelength (in nanometre) associated with a proton moving at . (Mass of proton = and ) (AIEEE 2009)

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Atomic StructureIntro, Dalton's theory, discharge tube & oil drop experiments, Rutherford scatteringMEDIUMJEE Chemistry
Calculate the wavelength (in nanometre) associated with a proton moving at . (Mass of proton = and ) (AIEEE 2009) **Options:** - **A.** 0.032 nm - **B.** 0.40 nm - **C.** 2.5 nm - **D.** 14.0 nm --- **Difficulty:** MEDIUM | **Chapter:** Atomic Structure | **Topic:** Intro, Dalton's theory, discharge tube & oil drop experiments, Rutherford scattering

Official Solution

## ✅ Correct Answer: **B** ### 📖 Detailed Explanation: **Solution:** **Analyzing each option:** (A) ✗ 0.032 nm... (B) ✓ 0.40 nm... (C) ✗ 2.5 nm... (D) ✗ 14.0 nm... **Correct Answer: (B)** **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 scatteringMEDIUMJEE Chemistry