ans plss
Q.15. An ideal gas with adiabatic constant 5/3 is heated at constant pressure till its volume becomes double. Then the same gas is heated at constant volume till its pressure is doubled. The average value of C (molar heat capacity) for the complete process is
A) $\frac{9}{2}$ R
B) $\frac{13}{6}$ R
C) 3 R
D) $\frac{11}{6}$ R