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In which process the entire heat supplied to the gas is converted to the internal energy of the gas?

Correct answer: A. Isochoric process

  • A. Isochoric process
  • B. Isobaric process
  • C. Isothermal process
  • D. Adiabatic process

Explanation

For all heat supplied (Q) to be converted into internal energy (ΔU), the work done (W) must be zero. Since work is defined as W = PΔV, work is zero only when the volume is constant (ΔV = 0), which is the definition of an isochoric process.

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About First Law of Thermodynamics

The first law relates heat supplied, work done and the change in internal energy through energy conservation. Problems use sign conventions and apply the law to isothermal, adiabatic, isobaric and isochoric processes. Internal energy is a state function, while heat and work depend on the path followed.

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