An ideal gas undergoes cyclic thermodynamic processes represented in three columns. Column-1 lists work expressions W(1→2), Column-2 lists process types (isothermal, isochoric, isobaric, adiabatic), and Column-3 shows the corresponding P-V paths. Use the source table/diagrams to answer the following questions.
Physics · Thermodynamics
An ideal gas undergoes cyclic thermodynamic processes represented in three columns. Column-1 lists work expressions W(1→2), Column-2 lists process types (isothermal, isochoric, isobaric, adiabatic), and Column-3 shows the corresponding P-V paths. Use the source table/diagrams to answer the following questions.

Sub-question 1
Which of the following options is the only correct representation of a process in which ΔU = ΔQ - PΔV?
Options
Sub-question 2
Which one of the following options is the correct combination ?
Options
Sub-question 3
Which one of the following options correctly represents a thermodynamics process that is used as a correction in the determination of the speed of sound in an ideal gas ?
Options