JEE Main 2020ChemistryStructure of AtomMediumMCQ

JEE Main 2020Structure of Atom Question with Solution

JEE Main 2020 (09 Jan Shift 1)

Question

The de Broglie wavelength of an electron in the 4th Bohr orbit is:

Choose an option

Show full solutionCorrect option: D
Correct answer
D8πa0

Step-by-step explanation

2πr=nλ
2π×n2Za0=nλ
2π×421a0=nλ
λ=8πa0

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About this question

This is a previous-year question from JEE Main 2020, covering the Structure of Atom chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.