dear mechanical engineer,
I am sharing you personal experience,, physics is an illusion for university engineers in CSS, because we never studied physics upto that level which CSS paper II requies,, 2nd, law subjects can be covered if you have better taste of current affairs , international relations and history,,, again its better to have political science instead of Physics and MAthematics as optional of 200 marks.
less prepration can guarantee more marks than ENGINEERING SUBJECTS.

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>>Honor bounds to defend freedom<<