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MHT CET 2022 Physics question

PhysicsDual Nature of Matter and RadiationMHT CET 2022

The kinetic energy of an electron is tripled, then the de-Broglie wavelength associated with it, will change by a factor

Answer: (D)

Solution

The de Broglie wavelength is , so . If the kinetic energy becomes , then $ =

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Question ID VK-097076