Physics-
General
Easy

Question

P-V diagram of a cyclic process ABCA is as shown in figure. Choose the correct statement

  1. capital delta Q subscript A rightwards arrow B end subscript= negative    
  2. capital delta U subscript B rightwards arrow C end subscript= positive    
  3. capital delta W subscript C A B end subscript= negative    
  4. All of these    

The correct answer is: All of these


    During process A to B, pressure and volume both are decreasing. Therefore, temperature and hence, internal energy of the gas will decrease (T µ PV) or capital delta U subscript A rightwards arrow B end subscript equalsnegative. Further capital delta W subscript A rightwards arrow B end subscriptis also negative as the volume of the gas is decreasing. Thus capital delta Q subscript A rightwards arrow B end subscript is negative.
    In process B to C pressure of the gas is constant while volume is increasing. Hence temperature should increase or capital delta U subscript B rightwards arrow C end subscript= positive. During C to A volume is constant while pressure is increasing. Therefore, temperature and hence, internal energy of the gas should increase or capital delta U subscript C rightwards arrow A end subscript= positive. During process CAB volume of the gas is decreasing. Hence, work done by the gas is negative

    Related Questions to study

    General
    physics-

    In the following figure, four curves A, B, C and D are shown. The curves are

    In the following figure, four curves A, B, C and D are shown. The curves are

    physics-General
    General
    physics-

    Six moles of an ideal gas perfomrs a cycle shown in figure. If the temperature are TA = 600 K, TB = 800 K, TC­ = 2200 K and TD = 1200 K, the work done per cycle is

    Six moles of an ideal gas perfomrs a cycle shown in figure. If the temperature are TA = 600 K, TB = 800 K, TC­ = 2200 K and TD = 1200 K, the work done per cycle is

    physics-General
    General
    physics-

    Four co-planar concurrent forces are acting on a body as shown in the figure to keep it in. equilibrium. Then the values of P and q are

    Four co-planar concurrent forces are acting on a body as shown in the figure to keep it in. equilibrium. Then the values of P and q are

    physics-General
    parallel
    General
    physics-

    Consider a process shown in the figure. During this process the work done by the system

    Consider a process shown in the figure. During this process the work done by the system

    physics-General
    General
    physics-

    The P-V diagram of a system undergoing thermodynamic transformation is shown in figure. The work done by the system in going from A rightwards arrow B rightwards arrow Cis 30J and 40J heat is given to the system. The change in internal energy between A and C is

    The P-V diagram of a system undergoing thermodynamic transformation is shown in figure. The work done by the system in going from A rightwards arrow B rightwards arrow Cis 30J and 40J heat is given to the system. The change in internal energy between A and C is

    physics-General
    General
    physics-

    An ideal gas is taken from point A to the point B, as shown in the P-V diagram, keeping the temperature constant. The work done in the process is

    An ideal gas is taken from point A to the point B, as shown in the P-V diagram, keeping the temperature constant. The work done in the process is

    physics-General
    parallel
    General
    physics-

    An ideal gas is taken around ABCA as shown in the above P-V diagram. The work done during a cycle is

    An ideal gas is taken around ABCA as shown in the above P-V diagram. The work done during a cycle is

    physics-General
    General
    physics-

    For one complete cycle of a thermodynamic process on a gas as shown in the P-V diagram, Which of following is correct

    For one complete cycle of a thermodynamic process on a gas as shown in the P-V diagram, Which of following is correct

    physics-General
    General
    physics-

    When a system is taken from state i to a state f along path if, Q equals 50 J and W equals 20 J. Along path ibf, Q equals 35 J. If W equals negative 13 J for the curved return path f i, Q for this path is

    When a system is taken from state i to a state f along path if, Q equals 50 J and W equals 20 J. Along path ibf, Q equals 35 J. If W equals negative 13 J for the curved return path f i, Q for this path is

    physics-General
    parallel
    General
    physics-

    A sample of ideal monoatomic gas is taken round the cycle ABCA as shown in the figure. The work done during the cycle is

    A sample of ideal monoatomic gas is taken round the cycle ABCA as shown in the figure. The work done during the cycle is

    physics-General
    General
    physics-

    Carbon monoxide is carried around a closed cycle abc in which bc is an isothermal process as shown in the figure. The gas absorbs 7000 J of heat as its temperature increases from 300 K to 1000 K in going from a to b. The quantity of heat rejected by the gas during the process ca is

    Carbon monoxide is carried around a closed cycle abc in which bc is an isothermal process as shown in the figure. The gas absorbs 7000 J of heat as its temperature increases from 300 K to 1000 K in going from a to b. The quantity of heat rejected by the gas during the process ca is

    physics-General
    General
    physics-

    A system changes from the state left parenthesis P subscript 1 end subscript comma   V subscript 1 end subscript right parenthesis to left parenthesis P subscript 2 end subscript V subscript 2 end subscript right parenthesis as shown in the figure. What is the work done by the system

    A system changes from the state left parenthesis P subscript 1 end subscript comma   V subscript 1 end subscript right parenthesis to left parenthesis P subscript 2 end subscript V subscript 2 end subscript right parenthesis as shown in the figure. What is the work done by the system

    physics-General
    parallel
    General
    physics-

    An ideal monoatomic gas is taken round the cycle ABCDA as shown in following P-V diagram. The work done during the cycle is

    An ideal monoatomic gas is taken round the cycle ABCDA as shown in following P-V diagram. The work done during the cycle is

    physics-General
    General
    physics-

    The P-V graph of an ideal gas cycle is shown here as below. The adiabatic process is described by

    The P-V graph of an ideal gas cycle is shown here as below. The adiabatic process is described by

    physics-General
    General
    physics-

    A thermodynamic system undergoes cyclic process ABCDA as shown in figure. The work done by the system is

    A thermodynamic system undergoes cyclic process ABCDA as shown in figure. The work done by the system is

    physics-General
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.