GENERAL KNOWLEDGE

Detailed explanation-1: -Two physical systems are in thermal equilibrium if there is no net flow of thermal energy between them when they are connected by a path permeable to heat. Thermal equilibrium obeys the zeroth law of thermodynamics.

Detailed explanation-2: -Heat is the flow of energy from a high temperature to a low temperature. When these temperatures balance out, heat stops flowing, then the system (or set of systems) is said to be in thermal equilibrium. Thermal equilibrium also implies that there’s no matter flowing into or out of the system.

Detailed explanation-3: -When two objects are in thermal equilibrium they are said to have the same temperature. During the process of reaching thermal equilibrium, heat, which is a form of energy, is transferred between the objects.

Detailed explanation-4: -Once the two locations have reached the same temperature, thermal equilibrium is established and the heat transfer stops.

Detailed explanation-5: -The condition under which two substances in physical contact with each other exchange no heat energy. Two substances in thermal equilibrium are said to be at the same temperature. See also thermodynamics.