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One mole of diatomic ideal gas undergoes a cyclic process ABC as shown in figure. The process BC is adiabatic. The temperatures at A, B and C are 400 K, 800 K and 600 K respectively. Choose the correct statement - B 800 K 600 K C A 400 K P V

1. The change in internal energy in the process CA is 700 R
2. The change in internal energy in the process AB is – 350 R
3. The change in internal energy in the process BC is – 500 R
4. The change in internal energy in whole cyclic process is 250 R CAREER POINT , CP Tower, IPIA, Road No.1, Kota (Raj.), : 0744-6630500 www.ecareerpoint.com Email: info@cpil.in 32 / 40 CAREER POINT [ CODE – F ]

Correct answer: The change in internal energy in the process BC is – 500 R

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