The ratio of specific heats $(\gamma )$ of a ideal gas is given by
  • A$\frac{1}{{1 - \frac{R}{{{C_P}}}}}$
  • B${1 + \frac{R}{{{C_V}}}}$
  • C$\frac{{{C_P}}}{{{C_P} - R}}$
  • D
    All of these
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