Question

One mole of helium is adiabatically expanded from its initial state $\left(P_i, V_i, T_i\right)$ to its final state $\left(P_f, V_f, T_f\right)$. The decrease in the internal energy associated with this expansion is equal to

Accepted Answer

${C}_{{V}}\left({T}_{{i}}-{T}_{{f}}\right)$

Answer

${C}_{{P}}\left({T}_{{i}}-{T}_{{f}}\right)$

Answer

$\frac{1}{2}\left({C}_{{P}}+{C}_{{V}}\right)\left({T}_{{i}}-{T}_{{f}}\right)$

Answer

$\left(C_P-C_V\right)\left(T_i-T_f\right)$

JEE PHYSICS MCQ: THERMODYNAMICS

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