www.PapersHunt.com INTERMEDIATE 2nd Year Physics VERY IMPORTANT QUESTIONS TOP 10 ESSAYS 1.Explain the formation of stationary waves in stretched strings and hence deduce the laws of transverse waves in stretched string. 2.State laws of transverse vibrations in stretched strings. Explain how do you verify them using sonometer. 3.What are “Harmonics” and Overtones”? How are they formed in an open pipe? Derive the equations for the frequencies of the harmonics produced in an open pipe. 4.State and explain Kirchhoff’s law in electricity and apply them to Wheat- stone bridge to obtain is balancing condition. HUNT 5.Explain the principle of meter bridge. Describe an experiment for the de- termination of unknown resistance of a wire. 6.Obtain an expression for the torque on aloop placed in a uniform mag- netic filed. Describe the construcion and working of moving coil galva- nometer? FOR SUCCESS 7.Describe the growth and decay of current in an inductance, resistance circuit. How the growth and decay are affected with different values of inductance discuss? 8.Explain the principle and working of a nuclear reactor with the help of a lebeled diagram. 9.What is rectifier? Explain working of half wave and full wave rectifiers with diarams Mention the expression for its efficiency? 10. Describe a transistor and explain its working. HUNT For Success PHYSICS REFRESHER It consists of selected VSAQ, SAQ, LAQ, PROBLEMS, GUESS PAPERS, PREVIOUS PAPERS With solutions For 1st year students is available in market Ask at your nearest book shop for copies Else contact us @ 9032 607 800 Price Rs. 60, Pages 200 Postal charges extra for outside Vizag students. www.PapersHunt.com TOP 10 SHORT ANSWERS 1. Describe the construction and working of an optical fibre. Sate its uses. 2. Describe Rams dens’ eye piece with the help of a neat sketch. Explain its advantages and disadvantages. 3. Describe Huygens eye piece with the help of a neat sketch. Explain its advantages and disadvantages. 4. Write about the main features in which Fraunhoffer and Fresnel approaches of diffraction differ? 5. Mention some (at least four) applications of differraction. 6. What the applications of polarization of light? 7. Write any four applications of interference of light. 8. Derive the equation for the couple acting on a bar magnet in a unifrom magnetic field and hence deduce the definition of magnetic moment. 9. Derive an expression for the period of oscillation of a bar magnet in vibration magnetometer. 10. Derive an expression for the magnetic induction a point on the axial line of a bar magnet. HUNT 11. Define a) Intensity electric field E, b) Potential difference between two points V. Derive the relation between them. 12. Derive the equation for equivalent capacitance (Capacity) When a number of capacitors are connected in parallel. 13. Derive an expression for the energy stored in a capacitor. What is the energy stored when FOR SUCCESS the space between the space is filled with a dielectric a) With charging battery disconnected b) With charging battery connected in the circuit. 14. Write short notes on thermistor. 15. Write short notes on back emf and internal resistance of a cell. 16. Write short notes on the working of a thermopile. 17. What is seebeck effect. Explain how thermo emf varies with temperature in a thermocouple, define neutral and invertion temperature. 18. Derive an expression for a force between two parallet conductors carrying a current. 19. What is a shunt? Deduce expressions for the current flowing through the galvanometer and shunt resistance. 20. State and explain Bio-Savart law. 21. What is Moseley’s law? Discuss briefly its importance. 22. Defince specific charge? Describe Thomson’s experiment to determine e/m of an electron with relevant theory. 23. What is photo electric effect? Mention the laws of photoelectric effect. Explain these laws using Einstein’s equation of photoelectric cells. 24. What are mass defect and binding energy? How is mass defect related to binding energy. 25. Defince the terms ‘decay constant’ for a radioactive substance, Deduce the relation between decay constant and half life period. 26. Explain the source of stellar energy. Explain the carbon-nitrogen cycle and proton-proton cycle occurring is stars. 27. What is a Zener diode? Explain how it is used as voltage regulator. 28. Define NAND and NOR gates. Give their truth tables.