# Why two reversible adiabatic lines Cannot intersect each other?

## Why two reversible adiabatic lines Cannot intersect each other?

During paths CA and CB, there is no heat transfer, the heat transfer takes place only the reversible isothermal path at a single temperature reservoir. So this cycle violates the 2nd law. Thus this reversible cycle is impossible. So the starting assumption that two reversible adiabatic paths intersect is false.

## Which property of a system is constant in reversible adiabatic process?

Entropy remains constant in an adiabatic process which is also reversible.

Which property of a system is constant in reversible adiabatic process a pressure B Volume C temperature D entropy?

Adiabatic processes are those in which there is no transfer of energy between the system and the surrounding. Therefore the total heat of the system remains conserved in an adiabatic process.

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### Why does the entropy remains constant in reversible adiabatic process?

The entropy is merely transferred from the system to the surroundings. Actually in all adiabatic compression process entropy does not remain constant. Entropy always accompanies heat transfer. Hence for only reversible adiabatic procedure entropy remains constant also known as an isentropic procedure.

### What is change in entropy when the system undergoes reversible?

The second law of thermodynamics states that in a reversible process, the entropy of the universe is constant, whereas in an irreversible process, such as the transfer of heat from a hot object to a cold object, the entropy of the universe increases.

Why is the PV curve for adiabatic process steeper than that for isothermal process 2 explain formation of clouds at high altitude?

The adiabatic curve is steeper than the isothermal curve, in both the processes of expansion and compression. To reach a same height in a longer distance means lower slope of the line. Hence adiabatic curve is more steeper than isothermal curve.

#### Does temperature increase in adiabatic expansion?

What happens to the temperature of an ideal gas in an adiabatic expansion? An adiabatic expansion has less work done and no heat flow, thereby a lower internal energy comparing to an isothermal expansion which has both heat flow and work done. Temperature decreases during adiabatic expansion.

Reversible adiabatic process is also called an Isentropic Process. It is an idealized thermodynamic process that is adiabatic and in which the work transfers of the system are frictionless; there is no transfer of heat or of matter and the process is reversible.

Why do two isothermal curves not intersect each other?

To carry out isothermal process, a perfect gas is compressed or allowed to expand very slowly. Isothermal curves never intersect each other as they have very little slope.

## How do you know if two planes are perpendicular?

Two planes are said to be perpendicular in space if the dihedral angle at which they meet the plane is a right angle. Note: Perpendicular lines always intersect at 90 degrees but not all intersecting lines are perpendicular.

## Can two lines be perpendicular to each other and vice versa?

Thus, both the line segments have a common intersection point i.e. X and are right angles to each other. Perpendicular lines lie in the same plane i.e. they are co-planar and intersect at right angles. Thus it implies that if you have two lines which are perpendicular to each other, then these lines will be at right angles and vice versa.

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Is adiabatic process reversible or irreversible?

Adiabatic process can be either reversible or irreversible. Following are the essential conditions for adiabatic process to take place: System must be perfectly insulated from the surrounding. The process must be carried out quickly so that there is sufficient amount of time for heat transfer to take place.

### What is adiabatic compression of the air?

Adiabatic compression of the air is defined as the compression in which no heat is added or subtracted from the air and the internal energy of the air is increased which is equal to the external work done on the air. The pressure of the air is more than the volume as the temperature increases during compression.