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JEE Main 2022 Physics question

PhysicsDual Nature of Matter and RadiationJEE Main 2022

An electron with speed and a photon with speed c have the same de-Broglie wavelength. If the kinetic energy and momentum of electron are and and that of photon are and respectively. Which of the following is correct ?

Answer: (2)

Solution

Equal de Broglie wavelengths imply equal momenta, = = p. The kinetic energy of the electron is = $/2m = pυ

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Question ID VK-025300