Question

First law of thermodynamics furnishes the relationship between
1. Various thermodynamics processes
2. Heat and Work
3. Various properties of the system
4. Heat, work and properties of the system

Answer 1

Correct Answer - Option 4 : Heat, work and properties of the system

Explanation:

• The first law of thermodynamics is a restatement of the law of conservation of energy. 
• It states that energy cannot be created or destroyed in an isolated system; energy can only be transferred or changed from one form to another.
• When heat energy is supplied to a thermodynamic system or any machine:  Two things may occur:
  • The internal energy of the system or machine may change.
  • The system may do some external work.

According to the first law of Thermodynamics:

ΔQ = ΔW + ΔU

Where ΔQ = Heat supplied to the system, ΔW = work done by the system, ΔU = change in internal energy of the system

Thus, the First law of thermodynamics furnishes the relationship between heat, work and the internal energy of the  system i.e., the properties of the systrem.