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An atom can radiate at any time after it is excited. It is found that in a typical case, the average excited atom has a lifetime of about 10^(-8) s. That is, during this period it emits a photon and is de-excited. What is the minimum uncertainty delta-v in the frequency of the photon?

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An atom can radiate at any time after it is excited. It is found that in a typical case, the average excited atom has a lifetime of about 10^(-8) s. That is, during this period it emits a photon and is de-excited. What is the minimum uncertainty delta-v in the frequency of the photon? Answer: 8 x 10^6 Hz

The minimum uncertainty in the frequency of the photon is approximately 8.0 x 10⁶ Hz, a value derived from the Heisenberg Uncertainty Principle relating energy and time. This result is determined by applying fundamental principles of quantum mechanics to the properties of the excited atom.