Hello anshu,
I will tell you the best preparation tips to study your claas 12 physics
1) make a thorough and keen version topics of your subject i .e...is understand the concepts rather than byhearting .
2)make a schedule of timetable and give a optimum time to each topic such that it should covers maximum syllabus
3)refer previous year question papers of physics so that all important questions will be covered
4) finally ,start revising the topics with a brief practice
Thank you