Question

A thermodynamic system is said to be in thermal contact with another system if it can exchange:

• A. energy through the process of heat transfer
• B. energy through the process of work
• C. matter
• D. all of the above

Answer 1

The correct option is A energy through the process of heat transfer

$Answer:-$ A

Two systems are said to be in the relation of thermal equilibrium if they are linked by a wall permeable only to heat (conducting wall) and they do not change over time. As a convenience of language, systems are sometimes also said to be in a relation of thermal equilibrium if they are not linked so as to be able to transfer heat to each other, but would not do so if they were connected by a wall permeable only to heat.