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Write the expression for work done in an...

Write the expression for work done in an adiabatic expansion and give the meaninigs of the symbols.

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`W=(muR)/((gamma-1))(T_(1)-T_(2)) " " ` where `T_(1) gt T_(2)`
`" " gamma`- ratio of specific heats
`" "` R- univesal gas constant
`" " mu`- number of moles of gas
Hence external work is done by the system.
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