A) decreased by\[200J\]
B) increased by\[100J\]
C) increased by\[300J\]
D) increased by\[400J\]
Correct Answer: D
Solution :
Change in volume \[\Delta V={{V}_{2}}-{{V}_{1}}\] \[=4-10=-6{{m}^{3}}\] As volume decreases, work is done on the gas and so it is negative \[W=P\Delta V\] \[=50\times (-6)=-300J\] Heat supplied\[Q=100J\] According to first law of thermodynamics change in internal energy is \[\Delta U=Q-W\] \[=100-(-300)\] \[=400J\] It means internal energy increase by\[=400J\].You need to login to perform this action.
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