An electron of mass m e and a proton of mass m p = 1836   m e are moving with the same speed. The ratio…

An electron of mass me and a proton of mass mp=1836 me are moving with the same speed. The ratio of their de Broglie wavelength λelectronλproton  will be :
  1. 1836
  2. 11836
  3. 918
  4. 1

Solution

Given mass of electron =me
Mass of proton =mp
given mp=1836 me
From de-Broglie wavelength
λ=hp=hmv
λeλp=mpme
=1836 meme
λeλp=1836

Asked in: JEE Main 2021 (25 Feb Shift 2)

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