*Applied physics* *PHY-321* *IMP QUESTION FOR ALL DEPARTMENTS* 1. Electric force and its applications 2. Coulombs law 3. Electric field due to a point charge 4. Ring and disk of charge 5. A point charge in electric field 6. Flux ,gasses law and its applications 7. Calculating potential from a field and vice versa 8. Potential due to point and continuous charge distribution 9. Resistivity 10. OHm's law and its applications 11. The Biot-Savart law 12. Magnetic force on a current 13. Ampare's law 14. Faraday's law of electromagnetic induction 15. Motional emf 16. Basic equation of electromagnetism 17. Total internal reflection and its use in Fibre optics 18. Single slit and double slit interference 19. Polarization of light waves *20. Aur jo topic b tiyar krna ha uska formula achy se krna q k paper mai jo b question aya usky sath jo numerical aye ga us mai wohi formula use hoga