An atom typically exists in an excited state for about Δt=10−8 s. Estimate the uncertainity in frequency Δν in the frequency of emitted photons when an atom makes a transition from an excited state with the simultaneous emission of a photon with an average frequency of νav = 7.1×1014 Hz. Calculate the ratio of uncertainity in frequency to the average frequency.

An atom typically exists in an excited state for about Δt=10−8 s. E

1.	An atom typically exists in an excited state for about Δt=10−8 s. Estimate the uncertainity in frequency Δν in the frequency of emitted photons when an atom makes a transition from an excited state with the simultaneous emission of a photon with an average frequency of νav = 7.1×1014 Hz. Calculate the ratio of uncertainity in frequency to the average frequency.
Answer» An atom typically exists in an excited state for about $Δ t = 10^{- 8}$ s. Estimate the uncertainity in frequency $Δ ν$ in the frequency of emitted photons when an atom makes a transition from an excited state with the simultaneous emission of a photon with an average frequency of $ν_{a v}$ = $7.1 \times 10^{14}$ Hz. Calculate the ratio of uncertainity in frequency to the average frequency.