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Friday, 9 October

JEE Main 2023 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 6 April 2023, Shift 1, Chemistry Q82

Question 82 of 90 in this shift, Chemistry question 22 of 30, Section B.

The wavelength of an electron of kinetic energy 4.50×10−294.50\times10^{-29} J is ________ ×10−5\times10^{-5} m. (Nearest integer) Given : mass of electron is 9×10−319\times10^{-31} kg, h=6.6×10−34h = 6.6\times10^{-34} J s

Official answer

7

NTA final key.

Chapter
Structure of Atom
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.