TN Phy, Important 3 Marks

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Class : XII
Subject : Physics

3 Marks



1. Torque on a dipole in uniform electric field.

2. Capacitance of parallel plate capacitor.

3. Capacitors in series and Capacitors in parallel

4. Electric field at a point on the axial line

5. Explain microscopic form of current and hence Ohm’s law

6. Discuss resistors in series and Resistors in parallel with necessary circuits.

7. Explain cells in series and cells in parallel.

8. State and Explain Kirchoff’s laws

9. Obtain wheatstone’s principle

10. Explain Seebeck effect and its applications. Explain Thomson effect

11. conversion of Galvanometer to ammeter and voltmeter

12. Types of spectra Emission spectra / Absorption spectra

13. Properties of EM waves

14. Difference between interference and diffraction.

15. Uses of Polaroid

16. Brewster’s law

17. Laws of photoelectric emission

18. Einstein’s photo electric equation

19. Photo cells and its applications Spectral Series of Hydrogen

20. deBroglie wavelength & de Broglie wavelength of electron

21. Amplitude modulation and Frequency modulation

22. Half wave rectifier

23. DeMorgan’s theorems

24. Binding energy curve

25. Ray diagram of Compound microscope or Astronomical telescope

26. Energy losses of a transformer / self induction

27. Production of induced emf by changing the area linked with the coil




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