A system changes from the state $({P_1},\;{V_1})$ to $({P_2},{V_2})$ as shown in the figure. What is the work done by the system
  • A$7.5 \times {10^5}\;joule$
  • B$7.5 \times {10^5}\;erg$
  • C$12 \times {10^5}\;joule$
  • D$6 \times {10^5}\;joule$
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