Second Law of Thermodynamics

An engine operating between the boiling and freezing points of water will have

A. Efficiency more than $27\%$.

B. Efficiency less than the efficiency of a Carnot engine operating between the same two temperatures.

C. Efficiency equal to $27\%$.

D. Efficiency less than $27\%$.

Choose the correct answer from the options given below

"Heat cannot be itself flow from a body at lower temperature to a body at higher temperature". This statement corresponds to

No process is possible whose sole result is the transfer of heat from a colder object to a hotter object. This is Clausius statement for

The second law of thermodynamics may be written is used symbols as-

The heat taken from a sink is heated on-

The _____ of the thermodynamics states that, no process is possibel whose sole results is the absorption heat from a reservation and the complete conversion of heat into work.

_________ of thermodynamics is used for understanding the concept of entropy change.

PMM2 is the machine which violates-

For an increase in the entropy define ____ of nature.

Entropy is the third law of thermodynamics.

Define the entropy.

Which of the following option are correct for the second law of thermodynamics?

What is the hypothetical example of the Kelvin – Planck Statement?

 Kelvin Planck Statement deals with conversion of work into _____, conservation of work, conservation of heat, and conversion of heat into work.

Kelvin Planck's law deal with

Efficiency of a engine always less than unity.

Heat cannot by itself flow from a body at lower temperature to a body at higher temperature” is a statement or consequence of

Mention the causes for irreversibility of a process.

Graphs below show the entropy versus energy $U$ of two systems $1$ and $2$ at constant volume. The initial energies of the systems are indicated by $U_{1, i}$ and $U_{2, i} ,$ respectively. Graphs are drawn to the same scale. The systems are then brought into thermal contact with each other. Assume that, at all times the combined energy of the two systems remains constant. Choose the most appropriate option indicating the energies of the two systems and the total entropy after they achieve the equilibrium.

Clausius's statement is a part of