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NEET 2012 Physics question

PhysicsDual Nature of Matter and RadiationNEET 2012

If the momentum of an electron is changed by , then the de Broglie wavelength associated with it changes by . The initial momentum of electron will be

Answer: (2)

Solution

de Broglie wavelength , so is constant and the fractional changes are equal in magnitude: $ =

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Question ID VK-091082