Which of the following is incorrect regarding the first law of thermodynamics
AIEEE 2005, Easy
Download our app for free and get startedPlay store
(b)Entropy is related to second law of thermodynamics.
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
    During an experiment, an ideal gas is found to obey a condition $VP^2 =$ constant. The gas is initially at a temperature $T$, pressure $P$ and volume $V.$ The gas expands to volume $4V$. 
    View Solution
  • 2
    Three processes form a thermodynamic cycle as shown on $P-V$ diagram for an ideal gas. Process $1 \rightarrow 2$ takes place at constant temperature $(300K$). Process $2 \rightarrow 3$ takes place at constant volume. During this process $40J$ of heat leaves the system. Process $3 \rightarrow 1$ is adiabatic and temperature $T_3$ is $275K$. Work done by the gas during the process $3 \rightarrow 1$ is ..... $J$
    View Solution
  • 3
    The latent heat of vaporization of water is $2240 \,J/gm$. If the work done in the process of vaporization of $1\, gm$ is $168\, J$, then increase in internal energy is  .... $J$
    View Solution
  • 4
    Find $V_B = ?$
    View Solution
  • 5
    For a refrigerator, heat absorbed from source is $800\, J$ and heat supplied to sink is $500\, J$ then the coefficient of performance is
    View Solution
  • 6
    A polyatomic gas with six degrees of freedom does $25\,\,J$ of work when it is expanded at constant pressure. The heat given to the gas is ..... $J$
    View Solution
  • 7
    One mole of an ideal gas in initial state $\mathrm{A}$ undergoes a cyclic process $A B C A$, as shown in the figure. Its pressure at $A$ is $\mathrm{P}_0$. Choose the correct option$(s)$ from the following

    $(A)$ Internal energies at $\mathrm{A}$ and $\mathrm{B}$ are the same

    $(B)$ Work done by the gas in process $\mathrm{AB}$ is $\mathrm{P}_0 \mathrm{~V}_0 \ln 4$

    $(C)$ Pressure at $C$ is $\frac{P_0}{4}$

    $(D)$ Temperature at $\mathrm{C}$ is $\frac{\mathrm{T}_0}{4}$

    View Solution
  • 8
    The gas law $\frac{{PV}}{T} = $ constant is true for
    View Solution
  • 9
    A diatomic ideal gas is used in a carnot engine as the working substance. If during the adiabatic expansion part of the cycle the volume of the gas increases from $V$ to $32\,V$ , the efficiency of the engine is
    View Solution
  • 10
    A solid body of constant heat capacity $1\ J/^o C$ is being heated by keeping it in contact with reservoirs in two ways :

    $(i)$ Sequentially keeping in contact with $2$ reservoirs such that each reservoir supplies same amount of heat.

    $(ii)$ Sequentially keeping in contact with $8$ reservoirs such that each reservoir supplies same amount of heat.

    In both the cases body is brought from initial temperature $100^o C$ to final temperature $200^o C$. Entropy change of the body in the two cases respectively is :

    View Solution