Verified Solution • 2025–26 Session moderate

QJEEM20Pha3da: JEE Main 2020 Physics - Class 12 JEEM20Pha3da Solution: An electron (of mass m) and a photon have the same energy E in…

An electron (of mass m) and a photon have the same energy E in the range of a few eV. The ratio of the de-Broglie wavelength associated with the electron and the wavelength of the photon is (c = speed of light in vaccuum)

Multiple Choice Options

  • A 1c(2Em)12
  • B 1c(E2m)12
  • C (E2m)12
  • D c(2mE)12

Step-by-Step Verified Solution

λe = hpe = h2mE

E = hcλphoton

⇒ λphoton = hcE

∴ λeλphoton = 1c(E2m)12

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