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An atom emits a photon of wavelength λ = 600 nm by transition from an excited state of life time 8 × 10-9 s. If $$\Delta \nu $$ represents the minimum uncertainty in the frequency of the photon, the fractional width $$\frac{{\Delta \nu }}{\nu }$$ of the spectral line is of the order of

An atom emits a photon of wavelength λ = 600 nm by transition from an excited state of life time 8 × 10-9 s. If $$\Delta \nu $$ represents the minimum uncertainty in the frequency of the photon, the fractional width $$\frac{{\Delta \nu }}{\nu }$$ of the spectral line is of the order of Correct Answer 10<sup>-6</sup>

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