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Two moles of an ideal monatomic gas occupies a volume V at 27 °C. The gas expands adiabatically to a volume 2V. Calculate (i) the final temperature of the gas and (ii) change in its internal energy.

A

(1) 195 K (2) 2.7 kJ

B

(1) 189 K (2) 2.7 kJ

C

(1) 195 K (2) –2.7 kJ

D

(1) 189 K (2) –2.7 kJ

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The correct Answer is:
D
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MOTION-Thermodynamics-EXERCISE - 3 SECTION b
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  13. A carnot engine operating between temperatures T(1) and T(2) has effic...

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  15. A Carnot engine, whose efficiency is 40%, takes in heat from a source ...

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  16. The above p-v diagram represents the thermodynamic cycle of an engine,...

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  19. n' moles of an ideal gas undergoes a process AtoB as shown in the figu...

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