1.

Write the various definition of first law of thermodynamics.

Answer»

First law of thermodynamics:

  • The total energy of an isolated system remains constant though it may change from one form to another.
  • Whenever energy of a particular type disappears equivalent amount of another type must be produced.
  • Total energy of a system and surroundings remains constant.
  • Energy can neither be created nor destroyed, but may be converted from one form to another.
  • The change in the internal energy of a closed system is equal to the energy that passes through its boundary as heat or work.
  • Heat and work are equivalent ways of changing a systems internal energy.


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