Advertisements
Advertisements
प्रश्न
In a cyclic process, if ΔU = internal energy, W = work done, Q = Heat supplied then ______.
पर्याय
ΔU = Q
Q = 0
W = 0
W = Q
Advertisements
उत्तर
In a cyclic process, if ΔU = internal energy, W = work done, Q = Heat supplied then W = Q.
Explanation:
In a cyclic process, the system returns to its initial state at the end of the cycle. Since the internal energy (ΔU) depends only on the state of the system, the change in internal energy over one complete cycle is:
ΔU = 0
From the first law of thermodynamics:
Substituting ΔU = 0
Q = W
Thus, in a cyclic process, the heat supplied to the system (Q) is equal to the work done by the system (W).
APPEARS IN
संबंधित प्रश्न
Give an example of some familiar process in which heat is added to an object, without changing its temperature.
An ideal gas is taken through an isothermal process. If it does 2000 J of work on its environment, how much heat is added to it?
For work done to be reversible, the process should be ______
What is a thermodynamic process?
Draw a p-V diagram showing positive work with varying pressure.
State the assumptions made for thermodynamic processes.
Explain the cyclic process.
3 mole of a gas at temperature 400 K expands isothermally from an initial volume of 4 litres to a final volume of 8 litres. Find the work done by the gas. (R = 8.31 J mol-1 K-1)
An ideal gas of volume 2 L is adiabatically compressed to (1/10)th of its initial volume. Its initial pressure is 1.01 x 105 Pa, calculate the final pressure. (Given 𝛾 = 1.4)
Explain thermodynamics of the adiabatic process.
In an isochoric process, we have ____________.
Give an expression for work done in an isothermal process.
Give an equation state for an isochoric process.
Draw the PV diagram for the isothermal process.
Draw the PV diagram for the isobaric process.
What is meant by a reversible and irreversible processes?
Derive the work done in an isothermal process.
Derive the work done in an adiabatic process.
Draw the TP diagram (P-x axis, T-y axis), VT(T-x axis, V-y axis) diagram for
- Isochoric process
- Isothermal process
- Isobaric process
In a petrol engine, (internal combustion engine) air at atmospheric pressure and temperature of 20°C is compressed in the cylinder by the piston to `1/8` of its original volume. Calculate the temperature of the compressed air. (For air γ = 1.4)
Consider the following cyclic process consist of isotherm, isochoric and isobar which is given in the figure.
Draw the same cyclic process qualitatively in the V-T diagram where T is taken along the x-direction and V is taken along the y-direction. Analyze the nature of heat exchange in each process.
In which of the following processes, beat is neither absorbed nor released by a system?
An ideal gas A and a real gas B have their volumes increased from V to 2V under isothermal conditions. The increase in internal energy ____________.
Assertion: Equal volumes of monatomic and polyatomic gases are adiabatically compressed separately to equal compression ratio `("P"_2/"P"_1)`. Then monatomic gas will have greater final volume.
Reason: Among ideal gases, molecules of a monatomic gas have the smallest number of degrees of freedom.
We consider a thermodynamic system. If `Delta"U"` represents the increase in its internal energy and W the work done by the system, which of the following statements is true?
The work done on the system in changing the state of a gas adiabatically from equilibrium state A to equilibrium state B is 22.4 J. If the gas is taken from state A to B through another process in which the net heat absorbed by the system is 15.5 cal, then the net work done by the system in the latter case is ______.
( l cal = 4.2 J)
In the figure shown here, the work done in the process ACBA is ______.
An ideal gas is taken through a cyclic process ABCDA as shown in figure. The net work done by the gas during the cycle is ______.
