JEE Main 2018 — Dual Nature of Matter Question with Solution
JEE Main 2018 (15 Apr)
Question
Two electrons are moving with non-relativistic speeds perpendicular to each other. If corresponding de brogile wavelengths are and , their de brogile wavelength in the frame of reference attached to their centre of mass is:
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
Momentum of each electron
Velocity of centre of mass
Velocity of particle about centre of mass
Velocity of centre of mass
Velocity of particle about centre of mass
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Dual Nature of Matter chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2018, 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.