Important questions of Physics Class 12
1. Explain any annihilation of metal and pair production?
2. Write the formation of electron proton and neutron by Quark's method?
3. Write the vector form of Coulomb's law?
4. How can we charge two spheres oppositely by the process of induction?
5. Why does the quantization of electric charge not deal with macroscopic charge?
6. Write the six properties of electric lines of force?
7. Derive an expression for magnitude field and direction of the electric field due to short electric dipole at any point?
8. Prove that the net force due to rotating dipole in a uniform electric field is always zero?
9. Explain the girl's theorem in brief with an explanation?
10. Drive an expression for electric potential due to electric dipole at any point?
11. Derive an expression for electric potential due to the system of charges in a nonuniform electric field?
12. Derive an expression for an isolated capacitor?
13. Explain why isolated capacitors are never be used?
14. Derive an expression for energy stored in the capacitor?
15. Derive an expression for the capacitance of a parallel plate capacitor when a dielectric substance is placed between them?
16. Prove that the electric field inside the conductor is zero?
17. Write the effect of the external electric field in polar dielectric substance and nonpolar dielectric substances?
18. Explain polarization density and electrical susceptibility?
19. What is the common potential to derive an expression for loss of energy in the process of common potential?
20. Write the experimental proof of Ohm's Law?
21. Write the microscopic form of Ohm's Law?
Or
write the vector form of Ohm's Law?
22. Write and explain the dependence of resistance and resistivity on the temperature?
23. Derive the parallel combination of battery when the current and internal resistance of two batteries at different?
24.state Kirchhoff's first law and 2nd law?
25. Write the balanced condition of the Wheatstone bridge principle?
26. Write the construction and comparison of two EMF of two cells by the method of the potentiometer, and how can the sensitivity of the potentiometer be increased?
27. State and prove Biot Savart law?
28. Derive an expression for the magnetic field due to an infinite straight wire carrying current?
29. State and prove ampere's circuital law?
30. Draw the magnetic lines of force for current-carrying solenoid and derive an expression for the magnetic field due to current carrying solenoid along its center and also draw the graph?
31. Derive an expression for torque due to the current-carrying loop placed in a uniform magnetic field?
32. Write the principle construction and working of moving coil galvanometer also explain the figure of merit of moving coil galvanometer?
33. How will you convert the galvanometer into the ammeter, and how will you convert the galvanometer into a voltmeter?
34. What will be the value of resistance for the ideal ammeter and ideal voltmeter?
35. Derive the formula for force per unit length due to two parallel straight wire carrying current and also define 1 ampere?
36. Derive an expression for magnetic dipole moment due to revolving electron around Orbit also explain Bohr's magneton and iron magnetic ratio?
37. What will be the value of magnetic pole strength when a magnet is cut longitudinally and transversely?
38. Derive the formula for magnitude and direction of earth magnetism also write the different components of earth magnetism?
39. Write the properties of diamagnetic and ferromagnetic substances?
40. Write the comparison between soft iron and steel?
Thanks for reading!
Sir how profit you earn from this article
You must be logged in to post a comment.