In an adiabatic expansion, the temperature of one mole of an ideal monatomic gas ( =5/3 ) decreases from 60 K to 50 K. The work done by the gas in the process is: [Take the universal gas constant as R=8.3 J mol -1 K -1 ]

1. A. 41.5 J
2. B. 83 J
3. C. 124.5 J
4. D. 166 J

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