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Re: Karnataka Board Pre University Question Papers
I am providing the question paper of Accountany for Department of Pre University Education, Karnataka. I am sharing the question paper from the official website. You can well prepare for your upcoming examinations with the question paper. I am giving the question paper in a pdf file for your reference. Use it for your purpose.
__________________ Answered By StudyChaCha Request : Support us by liking us on facebook (please click the LIKE button in the Facebook box below, you should be logged in at Facebook to do so) Last edited by shabnams; February 19th, 2014 at 09:20 AM. 
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Re: Karnataka Board Pre University Question Papers
Here I am sharing the Physic Question paper of Karnataka Board Pre University MODEL QUESTION PAPERI PART A I Answer the following. 10 x 1 = 10 1. Draw the electric lines of force in the case of two positive point charges separated by a small distance. 2. Name the charge carriers in metallic conductors. 3. A coil perpendicular to a uniform magnetic field is rotated by 1800. What is the change in the flux through it? 4. Write the expression for displacement current. 5. Mention one common method of generating Xrays. 6. Write the expression for magnifying power of a telescope in terms of focal lengths. 7. What is the outcome of Davisson Germer experiment? 8. How does nuclear radius of an atom depend on its mass number? 9. Who discovered the phenomenon of photoelectric effect? 10. What is demodulation? PART – B II Answer any FIVE of the following questions. 5×2=10 11. Write two properties of an electric charge. 12. What is electrostatic shielding? Mention its one application. 13. State Kirchhoff’s rules of an electrical network. 14. Mention two properties of a diamagnetic material. 15. What are eddy currents? Mention one application of eddy currents. 16. Draw the ray diagram to construct an image when an object is placed between the principal focus and pole of a concave mirror. 17. Mention two necessary conditions for doping. 18. Draw the block diagram of a generalized communication system. PART – C III Answer any FIVE of the following questions. 5×3=15 19. Write the expression for electric potential at a point due to a dipole and hence arrive at the expression for electric potential at a point on the dipole axis. 20. Obtain the expression for effective capacitance of three capacitors connected in parallel. 21. What is a cyclotron? Draw its schematic labeled diagram. 22. Explain briefly the coilmagnet experiment to demonstrate the phenomenon of electromagnetic induction. 23. What is meant by alternating current? Define its amplitude and time period. 24. Using Huygen’s wave theory of light, show that the angle of incidence is equal to angle of reflection in case of reflection of a plane wave by a plane surface. 25. Mention three experimental observations of photoelectric effect. 26. Classify metals, semiconductors and insulators based on the band theory of solids. PART – D IV Answer any TWO of the following questions. 2×5=10 27. Obtain the expressions for effective emf and effective internal resistance when ‘n’ different cells are connected in parallel. 28. State and explain BiotSavart’s law and write its mathematical equation in vector form. 29. Assuming the expression for magnetic field at a point on the axis of a circular current loop, show that a long current carrying solenoid acts as a bar magnet. V Answer any TWO of the following questions. 2×5=10 30. Derive the expression for the refractive index of the material of a prism in terms of the angle of the prism and angle of minimum deviation. 31. State radioactive decay law. Show that t oe N N l  = for a radioactive element with usual notations. 32. What is a solar cell? Explain its working with a diagram and draw the I V characteristics. VI Answer any THREE of the following questions. 3×5=15 33. The electrostatic force on a metal sphere of charge 0.4 mC due to another identical metal sphere of charge  0.8 mC in air is 0.2N. Find the distance between the two spheres and also the force between the same two spheres when they are brought into contact and then replaced in their initial positions. 34. In the given circuit, calculate the (i) effective resistance between A and B (ii) current through the circuit and (iii) current through 3 W resistor. 35. A resistor, an inductor and a capacitor are connected in series with a 120V, 100Hz ac source. Voltage leads the current by 350 in the circuit. If the resistance of the resistor is 10W and the sum of inductive and capacitive reactances is 17W, calculate the selfinductance of the inductor. 36. A beam of light consisting of two wavelengths 500 nm and 400 nm is used to obtain interference fringes in Young’s double slit experiment. The distance between the slits is 0.3 mm and the distance between the slits and the screen is 1.5 m. Compute the least distance of the point from the central maximum, where the bright fringes due to both the wavelengths coincide. 37. The first member of the Balmer series of hydrogen atom has wavelength of 656.3nm. Calculate the wavelength and frequency of the second member of the same series. Given, C = 3×108 m/s. Address: Pre University Education Board 18th Cross Rd, Malleswaram, Bangalore, Karnataka 080 2344 6475 Map:
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