1.

Concept of heat

Answer»
  • Heat may be defined as energy in transit. 
  • Word heat is used only if there is a transfer of energy from one thermodynamic system to the another. 
  • When two systems at different temperatures are kept in contact with each other than after some time temperatures of both the systems become equal and this phenomenon can be described by saying that energy has flown from one system to another. 
  • This flow of energy from one system to another on account of temperature difference is called heat transfer. 
  • Flow of heat is a non-mechanical mode of energy transfer. 
  • Heat flow depends not only on initial and find states but also on path it's.


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