Question

Isothermal process can be represented by which law?

(a) Charle’s law

(b) Boyle’s law

(c) Gay-Lussac’s law

(d) 2nd law of thermodynamics

The question was asked by my college professor while I was bunking the class.

My enquiry is from Thermodynamic Processes topic in portion Thermodynamics of Physics – Class 11

Answer 1

Right option is (b) Boyle’s law

To explain I would say: In an isothermal process, PV=const. This is the same as Boyle’s law. Charle’s law is given by: V/T=const. Gay-Lussac’s law is given by: P/T=const and 2nd law of thermodynamics states that in every process total entropy of the universe must increase.