JEE Main 2023 — Dual Nature of Matter Question with Solution
JEE Main 2023 (15 Apr Shift 1)
Question
The de Broglie wavelength of an electron having kinetic energy is . If the kinetic energy of electron becomes , then its de-Broglie wavelength will be:
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
The de-Broglie wavelength in the first case is
In the second case the kinetic energy is .
Let the de-Broglie wavelength be .
The value of wavelength is
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This is a previous-year question from JEE Main 2023, covering the Dual Nature of Matter chapter of Physics. 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.