Link Study Materials – OnlineMathematics Chapter 1: Factorization and Quadratic Formula Chapter 2: Partial Fractions Chapter 3: Set, Intervals, Absolute Value Function and Inequalities Chapter 4: What is Function? Chapter 5: Trigonometry Physics Chapter 1: Frames of Reference Chapter 2: Graphs: Their linkage with differential coefficient Chapter 3: Vectors Chapter 4: Understanding Differentiation Chapter 5: Understanding Integration Chapter 6: Introduction to Logarithms Chapter 7: Understanding Binomial Theorem Chemistry Chapter 1: Chemical Bonding Chapter 2: Mole Concept and Stoichiometry Chapter 3: Thermodynamics Chapter 4: Equilibrium Chapter 5: Redox Reactions Chapter 6: Electrochemistry Biology Chapter 1: How Life Begins? Chapter 2: Cell Division – An Introduction Chapter 3: Introduction to Heredity and Variation Chapter 4: Bio-molecules Chapter 5: Respiration Chapter 6: Plant Anatomy Chapter 7: Active and Passive Transport The link materials aim to encourage students to become active learners. The more they use and apply concepts, the better they will understand what is taught in class. Therefore, the Board requests all School Heads to ensure that the link materials are easily accessed by teachers and students.
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The Central Board of Secondary Education (CBSE) announces date sheet for Class 10 and 12 boards. Both are scheduled to commence from March 5 2018. CBSE CLASS 10 DATE SHEET!CBSE CLASS 12 DATE SHEET!THESE ARE THE MOST IMPORTANT QUESTIONS FOR CLASS 12 AND I HOPE MANY WILL BE IN EXAMS.... 1. Derive an expression for the Electric field at a point on the (i) axial line and (ii) equatorial line of an electric dipole
2. Describe the principle construction and working of Van de Graff Generator. 3. State Gauss’ theorem and apply it to find the electric field at a point due to (i)A point charge (ii) A line of charge (iii)A plane sheet of charge (iv)A charged spherical conducting shell 4. Derive expression for the potential energy of a system of point charges. 5. Derive expression for the torque on a dipole in a uniform electric field. 6. Derive expression for the work done in turning a dipole in a uniform electric field. 7. Derive an expression for the potential energy of a dipole in a uniform electric field. 8. Explain the principle of a parallel plate capacitor 9. Derive an expression for the capacitance of a parallel plate capacitor. 10. Derive an expression for the effective capacit ance when three capacitors are connected in (i) series (ii) parallel 11. Derive an expression for the energy stored in a parallel plate capacitor. 12. Derive an expression for the loss of energy when two conductors at different potentials are brought into electrical contact. Account for this energy. 13. Derive and expression for the energy density of a parallel plate capacitor. 14. Derive I = nAeVd 15. Define drift velocity and derive an expression for it. 16. Deduce Ohm’s law from elementary concepts 17. State Biot Savart’s Law and apply it to find the magnetic field at a point due to long straight conductor carrying current 18. State Ampere’s circuital theorem and apply it to find the magnetic field inside a (i) solenoid (ii) toroid 19. State the Principle of a potentiometer and Explain how is it used (i) to determine the internal resistance of a primary cell (ii) to compare the emfs of two primary cells 20. State Kirchhoff’s laws and apply it to derive Wheatstone’s bridge principle. 21. Explain how will you use a metre bridge to find the resistance of a given resistor wire? 22. Describe the elements of earth’s magnetic field. 23. Compare the properties of para dia and ferromagnetic substances. 24. Derive an expression for the effective resistance when three resistors are connected in (i) series (ii) parallel 25. Describe the principle construction and working of CYCLOTRON. Derive an expression for cyclotron frequency. Why electrons cannot be accelerated in a cyclotron? 26. Derive an expression for the force between two straight long parallel conductors carrying constant current and hence define one ampere. 27. Describe the principle construction and working of Moving Coil Galvanometer. 28. Derive an expression for the torque on a current carrying loop kept in a uniform magnetic field 29. Explain how will you convert a galvanometer into (i) an ammeter (ii) a voltmeter 30. Define motional emf and derive an expression for it. 31. What are eddy currents? Explain its applications 32. What is self induction and self inductance? Derive an expression for the self inductance of a long solenoid carrying current 33. Define mutual induction and mutual inductance. Derive an expression for the mutual inductance of a pair of solenoids. What are the factors affecting the mutual inductance of a pair of solenoids? 34. Derive an expression for the average value of ac for a half cycle. 35. Derive an expression for the RMS value of ac 36. Explain the principle and construction of a transformer and the various losses in a transformer. 37. Derive an expression for impedance of a series LCR circuit. Define resonance is series LCR circuit and derive an expression for resonant frequency. 38. Derive an expression for average power in an AC circuit. Define power factor and show that the average power consumed in a pure inductor or a pure capacitor is zero. 39. Define Q factor of resonance. Derive an expression for Q factor. 40. Derive lens makers formula 41. Derive mirror formula 42. Derive a relation connecting object distance and image distance when a point object kept in from of a convex refracting surface forms a real image inside the denser medium. (Also practice other similar cases for real images and virtual images as well as for convex interface and concave interface) 43. Derive an expression relating angle of prism, angle of incidence, angle of emergence and angle of deviation when light is refracted by a prism 44. Derive n = sin (A+D)/2 / sin (A/2) for refraction through a prism. 45. Derive an expression for the effective focal length of the combination of two lenses in contact. |
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