Physics-
General
Easy

Question

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

  1. 33 J    
  2. 23 J    
  3. – 7 J    
  4. – 43 J    

The correct answer is: – 43 J


    capital delta U, remains same for both path
    For path if : capital delta U equals capital delta Q minus capital delta W equals 50 minus 20 equals 30 J.
    For path f i : capital delta U equals negative 30 J text and  end text capital delta W equals negative 13 J
    Þ capital delta Q equals negative 30 minus 13 equals negative 43   J

    Related Questions to study

    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
    General
    physics-

    A system is taken through a cyclic process represented by a circle as shown. The heat absorbed by the system is

    A system is taken through a cyclic process represented by a circle as shown. The heat absorbed by the system is

    physics-General
    General
    physics-

    In the diagrams (i) to (iv) of variation of volume with changing pressure is shown. A gas is taken along the path ABCD. The change in internal energy of the gas will be

    In the diagrams (i) to (iv) of variation of volume with changing pressure is shown. A gas is taken along the path ABCD. The change in internal energy of the gas will be

    physics-General
    General
    physics-

    A thermodynamic system is taken from state A to B along ACB and is brought back to A along BDA as shown in the PV diagram. The net work done during the complete cycle is given by the area

    A thermodynamic system is taken from state A to B along ACB and is brought back to A along BDA as shown in the PV diagram. The net work done during the complete cycle is given by the area

    physics-General
    parallel
    General
    physics-

    Heat energy absorbed by a system in going through a cyclic process shown in figure is

    Heat energy absorbed by a system in going through a cyclic process shown in figure is

    physics-General
    General
    physics-

    An ideal gas is taken around the cycle ABCA as shown in the P-V diagram. The net work done by the gas during the cycle is equal to

    An ideal gas is taken around the cycle ABCA as shown in the P-V diagram. The net work done by the gas during the cycle is equal to

    physics-General
    General
    physics-

    In the cyclic process shown in the figure, the work done by the gas in one cycle is

    In the cyclic process shown in the figure, the work done by the gas in one cycle is

    physics-General
    parallel
    General
    physics-

    In the figure given two processes A and B are shown by which a thermo-dynamical system goes from initial to final state F. If capital delta Q subscript A end subscript and capital delta Q subscript B end subscript are respectively the heats supplied to the systems then

    In the figure given two processes A and B are shown by which a thermo-dynamical system goes from initial to final state F. If capital delta Q subscript A end subscript and capital delta Q subscript B end subscript are respectively the heats supplied to the systems then

    physics-General
    General
    physics-

    A thermodynamic system is taken through the cycle PQRSP process. The net work done by the system is

    A thermodynamic system is taken through the cycle PQRSP process. The net work done by the system is

    physics-General
    General
    physics-

    An aeroplane is heading north east at a speed of 141.4 m s to the power of negative 1 end exponent. The northward component of its velocity is

    An aeroplane is heading north east at a speed of 141.4 m s to the power of negative 1 end exponent. The northward component of its velocity 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.