A $P-T$ graph is shown for a cyclic process. Select correct statement regarding this
Medium
Download our app for free and get startedPlay store
(c)

In process $B C$ (isochoric process) where $\Delta T$ is (+)ive.

So $\Delta U=n C_v \Delta T$

$\because \Delta T$ is positive $\Rightarrow U$ increases

art

Download our app
and get started for free

Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*

Similar Questions

  • 1
    A sample of an ideal gas is taken through the cyclic process $ABCA$ as shown in figure. It absorbs, $40\,J$ of heat during the part $A B$, no heat during $BC$ and rejects $60\,J$ of heat during $CA$. $A$ work $50\,J$ is done on the gas during the part $BC$. The internal energy of the gas at $A$ is $1560\,J$. The work done by the gas during the part $CA$ is.............$J$
    View Solution
  • 2
    In adiabatic expansion
    View Solution
  • 3
    A gas undergoes a change of state during which $100 J$ of heat is supplied to it and it does $20 J$ of work. The system is brought back to its original state through a process during which $20 J$ of heat is released by the gas. The work done by the gas in the second process is ....... $J$
    View Solution
  • 4
    The efficiency of Carnot's engine operating between reservoirs, maintained at temperatures ${27^o}C$ and $ - {123^o}C,$ is ...... $\%$
    View Solution
  • 5
    In an adiabatic process, the state of a gas is changed from ${P_1},{V_1},{T_1} $ to ${P_2},{V_2},{T_2}$. Which of the following relation is correct
    View Solution
  • 6
    The pressure of an ideal gas varies with volume as $P = \alpha V,$ where $\alpha $ is a constant. One mole of the gas is allowed to undergo expansion such that its volume becomes $'m'$  times its initial volume. The work done by the gas in the process is
    View Solution
  • 7
    $Assertion :$ In an isolated system the entropy increases.
    $Reason :$ The processes in an isolated system are adiabatic.
    View Solution
  • 8
    A gas taken through cyclic process $ABCA$ is shown in figure. If $2.4\,cal.$ of heat is given in the process, what is value of $J$ ...... $J/cal$ (mechanical equivalent of heat)?
    View Solution
  • 9
    One mole of a monoatomic ideal gas goes through a thermodynamic cycle, as shown in the volume versus temperature ($V-T$) diagram. The correct statement($s$) is/are :

    [ $R$ is the gas constant]

    $(1)$ Work done in this thermodynamic cycle $(1 \rightarrow 2 \rightarrow 3 \rightarrow 4 \rightarrow 1)$ is $| W |=\frac{1}{2} RT _0$

    $(2)$ The ratio of heat transfer during processes $1 \rightarrow 2$ and $2 \rightarrow 3$ is $\left|\frac{ Q _{1 \rightarrow 2}}{ Q _{2 \rightarrow 3}}\right|=\frac{5}{3}$

    $(3)$ The above thermodynamic cycle exhibits only isochoric and adiabatic processes.

    $(4)$ The ratio of heat transfer during processes $1 \rightarrow 2$ and $3 \rightarrow 4$ is $\left|\frac{Q_{U \rightarrow 2}}{Q_{3 \rightarrow 4}}\right|=\frac{1}{2}$

    View Solution
  • 10
    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)
    View Solution