d) The Rosseland mean opacity at the centre of the Sun is 0.217 m2·kg−1. i) determine the mean free path of a photon at the centre of the Sunii) if the mean free path in part (i) remained constant, calculate the averageeffective time it would take for a photon originating from the centre to beemitted from the Sun.

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d) The Rosseland mean opacity at the centre of the Sun is 0.217 m2·kg−1. 
i) determine the mean free path of a photon at the centre of the Sun
ii) if the mean free path in part (i) remained constant, calculate the average
effective time it would take for a photon originating from the centre to be
emitted from the Sun.

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