12th Std Plus Two +2 Model Question Paper : Physics www.jac.nic.in Jharkhand
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  1. February 23rd, 2012, 05:22 PM Post Count Number #1
    mariammal
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    12th Std Plus Two +2 Model Question Paper : Physics www.jac.nic.in Jharkhand

    Document Described : Physics Question Paper, Jharkhand Question Paper

    PHYSICS
    (Compulsory)
    Full Marks - 70
    Pass Marks - 23
    Time - 3 Hours
    All questions are compulsory.
    Candidates are required to give their answers in their own words as far as practicable.

    http://jac.nic.in/model_questions.htm
    http://jac.nic.in/pdf/model_question...ysics12_08.pdf

    General Instructions :
    Question Nos. 1 to 5 carry 1 mark each.
    Question Nos. 6 to 12 carry 2 marks each.
    Question Nos. 13 to 24 carry 3 marks each.
    Question Nos. 25 to 27 carry 5 marks each.
    1. What is the SI unit of absolute permittivity of free space ?
    2. What is the nature of magnetic field in a moving coil galvanometer ?
    3. Write an expression for the speed of electromagnetic waves in free space.
    4. What is the principle of a photo cel ?
    5. What is analog signal ?
    6. Define an equipotential surface. What are its characteristics ?
    7. What are the Faraday?s Laws of electro- magnetic induction ?
    8. Obtain an expression for the force on a moving charge in uniform magnetic field. Under what condition this force is maximum ?
    9. What is electromagnetic spectrum ? What are its main parts ?
    10. The velocity of light in a liquid is 1.5 × 108 ms?1 and in air it is 3 × 108 ms?1. If a ray of light passed from this liquid to air, calculate the value of critical angle.
    11. What is mutual induction ? Explain.
    12. What are intrinsic and extrinsic semi- conductors ? Explain.
    13. If two resistors are connected in series, the equivalent resistance becomes 16 . If the same are connected in paralel, the equivalent resistance is 3 . Find the individual resistances.
    14. Obtain expression for power in a.c. circuits. What will be power consumed in a pure inductor ?
    15. What is dispersion of light ? Define angular dispersion and dispersive power of the material of a prism.
    16. What potential difference must be applied to stop the fastest photoelectrons emitted by a nickel surface under the action of ultraviolet light of wavelength 1900 A° ? The work function of nickel is 5.0 eV.
    17. What is Rutherford-Soddy law for radio- active decay ? The decay constant of radium is 1.36 × 10?11 per second. What is its half- life ?
    18. Draw the logic symbol of NAND and NOR gates and give their truth table.
    19. What is modulation ? Define diferent types of modulations.
    20. Describe the colour codes for carbon resistors.
    21. Obtain expression for the impedance of a series LCR circuit.
    22. What is nuclear fission and fusion ? Explain with one reaction in each case.
    23. Distinguish between Conductors, Insulators and Semiconductors with the help of energy band diagram.
    24. A TV tower has a height of 75 m. What is the maximum distance and area up to which this TV transmission can be received on the earth ?
    25. Derive expression for the capacitance of a parallel plate capacitor with a dielectric medium between the plates.
    26. Describe, with theory, the construction and working of a cyclotron.
    27. What is fringe width ? Derive an expression for the fringe width.
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    Last edited by mariammal; February 23rd, 2012 at 05:26 PM.
  2. January 28th, 2013, 06:14 PM Post Count Number #2
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    I want biology sample question papers. Please post it.