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The Rosseland mean opacity at the centre of the Sun is 0.217 m2 ·kg−1 . i)...

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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