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cse • paper_2 • quantum_mechanicscse-2005-subject-05-001

Quantum commutators — UPSC CSE 2005 Physics PYQ

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(i) Write the commutation relations for the position variable x and the momentum components p_x, p_y and p_z. Explain the physical significance of these relations. (ii) Calculate the de Broglie wavelength of an electron moving with a kinetic energy of 1 MeV.

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