One mole of helium is adiabatically expanded from its initial state $({P_i},{V_i},{T_i})$ to its final state $({P_f},{V_f},{T_f})$. The decrease in the internal energy associated with this expansion is equal to
One mole of helium is adiabatically expanded from its initial state $({P_i},{V_i},{T_i})$ to its final state $({P_f},{V_f},{T_f})$. The decrease in the internal energy associated with this expansion is equal to
- A
${C_V}({T_i} - {T_f})$
- B
${C_P}({T_i} - {T_f})$
- C
$\frac{1}{2}({C_P} + {C_V})(Ti - {T_f})$
- D
$({C_P} - {C_V})({T_i} - {T_f})$
Similar Questions
Two identical balls, $A$ and $B$ , of uniform composition and initially at the same temperature, each absorb exactly the same amount of heat. $A$ is hanging down from the ceiling while $B$ rests on the horizontal floor in the same room. Assuming no subsequent heat loss by the balls, which of the following statements is correct about their final temperatures, $T_A$ and $T_B$ , once the balls have reached their final state?
Two identical balls, $A$ and $B$ , of uniform composition and initially at the same temperature, each absorb exactly the same amount of heat. $A$ is hanging down from the ceiling while $B$ rests on the horizontal floor in the same room. Assuming no subsequent heat loss by the balls, which of the following statements is correct about their final temperatures, $T_A$ and $T_B$ , once the balls have reached their final state?
In adiabatic expansion of a gas
In adiabatic expansion of a gas
If $\Delta U$ and $\Delta W$ represent the increase in internal energy and work done by the system respectively in a thermodynamical process, which of the following is true?
If $\Delta U$ and $\Delta W$ represent the increase in internal energy and work done by the system respectively in a thermodynamical process, which of the following is true?
- [AIPMT 1998]
A gas at initial temperature $T$ undergoes sudden expansion from volume $V$ to $2 \,V$. Then,
A gas at initial temperature $T$ undergoes sudden expansion from volume $V$ to $2 \,V$. Then,
- [KVPY 2016]
You feel enjoy by having bath in shower in summer but not in winter. Why ?
You feel enjoy by having bath in shower in summer but not in winter. Why ?