In p-V diagram below, dashed curved line is an adiabat.For a process that is described by a straight

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11.Thermodynamics

normal

In the $p-V$ diagram below, the dashed curved line is an adiabat.For a process that is described by a straight line joining two points $X$ and $Y$ on the adiabat (solid line in the diagram) heat is (Hint consider the variation in temperature from $X$ to $Y$ along the straight line)

absorbed throughout from $X$ to $Y$

released throughout from $X$ to $Y$

absorbed from $X$ upto an intermediate point $Z$ (not shown in the figure) and then released from $Z$ to $Y$

released from $X$ upto an intermediate point $Z$ (not shown in the figure) and then absorbed from $Z$ to $Y$

(KVPY-2013)

Solution

(c)

As we move along line $X Y$, it cuts a isotherm at higher temperature $\left(T_2 > T_3\right)$

$\left(T_2 > T_3\right)$ but then from $Z$ to $Y$ line moves to a low temperature isotherm. So, heat is absorbed upto $Z$ and then it is released from $Z$ to $Y$.

Standard 11

Physics

A cyclic process $ABCA$ is shown in the $V-T $ diagram. Process on the $P-V$ diagram is

hard

A gas takes part in two processes in which it is heated from the same initial state $1$ to the same final temperature. The processes are shown on the $P-V$ diagram by the straight line $1-2$ and $1-3$. $2$ and $3$ are the points on the same isothermal curve. $Q_1$ and $Q_2$ are the heat transfer along the two processes. Then

normal

An ideal system can be brought from state $A$ to $B$ through four paths as shown in the figure. The energy given to the system is minimum in

medium

A student records $\Delta Q, \Delta U \& \Delta W$ for a thermodynamic cycle $A$ $\rightarrow$ $B \rightarrow C \rightarrow A$. Certain entries are missing. Find correct entry in following options.

hard

Two moles of monoatomic gas is expanded from $(P_0, V_0)$ to $(P_0 , 2V_0)$ under isobaric condition. Let $\Delta Q_1$, be the heat given to the gas, $\Delta W_1$ the work done by the gas and $\Delta U_1$ the change in internal energy. Now the monoatomic gas is replaced by a diatomic gas. Other conditions remaining the same. The corresponding values in this case are $\Delta Q_2 , \Delta W_2 , \Delta U_2$ respectively, then

normal

In the $p-V$ diagram below, the dashed curved line is an adiabat.For a process that is described by a straight line joining two points $X$ and $Y$ on the adiabat (solid line in the diagram) heat is (Hint consider the variation in temperature from $X$ to $Y$ along the straight line)

Solution

Similar Questions

A cyclic process $ABCA$ is shown in the $V-T $ diagram. Process on the $P-V$ diagram is

An ideal system can be brought from state $A$ to $B$ through four paths as shown in the figure. The energy given to the system is minimum in

A student records $\Delta Q, \Delta U \& \Delta W$ for a thermodynamic cycle $A$ $\rightarrow$ $B \rightarrow C \rightarrow A$. Certain entries are missing. Find correct entry in following options.

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