Question

When two bodies are in thermal equilibrium with a third body then they are also
in thermal equilibrium with each other. This statement is called
O Second law of thermodynamics
O First law of thermodynamics
O Kelvin Planck's law.
O Zeroth law of thermodynamics​

Answer 1

Answer:

d. Zeroth law of thermodynamics.

Answer 2

The given statement is called (d) Zeroth law of thermodynamics​.

(d) Zeroth law of thermodynamics​- correct option

• Ralph H. Fowler deserves praise for creating the law.
• The bodies B and C will also be in thermal equilibrium with one another if body A is in thermal equilibrium with body B and with a different body C independently.
• The above statement gives the definition of the zeroth law of thermodynamics.
• Temperature measurement is the foundation of the law.
• Hence, this option is correct.

(a) Second law of thermodynamics- incorrect option

• The direction of heat transmission and the achievable efficiency of heat engines were both constrained by the second law of thermodynamics.
• According to the second law of thermodynamics, any naturally occurring process will always cause the universe's entropy (S) to increase.
• The law simply states that the entropy of an isolated system will never diminish over time.
• Hence this option is incorrect.

(b) First law of thermodynamics- incorrect option

• According to the first law of thermodynamics, energy in the universe is constant and cannot be generated or destroyed, although it can be exchanged between a system and its environment.
• While the first law of thermodynamics provides information on the quantity of energy transfer as a process, it is unable to shed any light on the direction or the nature of the energy being transferred.
• Hence this option is incorrect.

(c) Kelvin Planck's law- incorrect option

• The Heat Engine Statement is another name for the Kelvin-Planck hypothesis.
• It states that it is not possible to design a heat engine that can both create an equivalent amount of work and absorb energy in the form of heat.
• Hence, this option is incorrect.

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