Question bank/JEE Main/Physics

A certain quantity of oxygen [IMAGE] is
compressed isothermally until its pressure is doubled
[IMAGE]. The gas is then allowed to expand adiabatically
until its original volume is restored. Then the final pressure (P) in
terms of initial pressure [IMAGE] is:
vkWDlhtu,d izkjfEHkd nkc

ANone of these

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[IMAGE] (isothermal process) ¼lerkih

Source: Grass-G / Ph-25 Physics paper 7 Jan.docx