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IFoS · Paper II · Quantum Mechanicsifos-2022-subject-05-001

Foundations of Quantum Mechanics — UPSC Physics Optional IFoS 2022 Paper II

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The lifetime of a given atom in an excited state is 10^{-8}\text{ s}. It comes to the ground state by emitting a photon of wavelength 5800\text{ \AA}. Find the energy uncertainty and wavelength uncertainty of the photon.

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