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PhysicsModern PhysicsDe Broglie & Matter WavesEasy2 minPYQ_2022
PhysicsEasystatement

The de Broglie wavelengths for an electron and a photon areλeandλprespectively. For the same kinetic energy of electron and photon, which of the following presents the correct relation between the de Broglie wavelengths of two?

Options:

Answer:
A
Solution:

De-Broglie wavelength for electron is given by, λe=h2mk

For photon k=hcλpλp=hck. Therefore,

λe=hλp2mhc

λpλe2

Stream:JEESubject:PhysicsTopic:Modern PhysicsSubtopic:De Broglie & Matter Waves
2mℹ️ Source: PYQ_2022

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