The maximum possible efficiency of a heat engine is ...........

  • A
    $100 \%$
  • B
    $\frac{T_1}{T_2}$
  • C
    $\frac{T_1}{T_2}+1$
  • D
    Dependent upon the temperature of source $(T_1)$ and sink $(T_2)$ and is equal to $(1-\frac{T_2}{T_1})$

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