A gas is compressed from a volume of $2\,m^3$ to a volume of $1\, m^3$ at a constant pressure of $100\, N/m^2$. Then it is heated at constant volume by supplying $150\, J$ of energy. As a result, the internal energy of the gas
  • Aincreases by $250\, J$
  • Bdecreases by $250\, J$
  • Cincreases by $50\, J$
  • Ddecreases by $50\, J$
JEE MAIN 2014, Medium
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