43. In an adiabatic process, the state of a gas is changed from

(P1,V1,T1) to (P2,V2,T2) . Which of the following relation is correct

(a) T₁V₁^γ-1=T₂V₂^γ-1               (b) P₁V₁^γ-1=P₂V₂^γ-1

(c)  T₁P₁^γ=T₂P₂^γ                     (d) T₁V₁^γ=T₂V₂^γ

Answer-a