Which of the following curve is an isotherm?
Correct answer: D. Option D
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation
In the context of thermodynamics and gas behavior, an "isotherm" refers to a curve or line on a graph representing a process that occurs at constant temperature. The term "isotherm" is commonly associated with the pressure-volume (PV) diagram for ideal gases.For an ideal gas undergoing an isothermal process, the relationship between pressure (P) and volume (V) is given by the equationPV=nRT, where nRT are constants in isothermal process (no temperature change) On a PV diagram, this relationship corresponds to a hyperbolic curve.
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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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