Physics | KA Board | Grade 12 | 2017
Q. State Faraday's law of electromagnetic induction.
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Q. What is rectification? With relevant circuit diagram and waveforms explain the working of a P-N junction diode as a full-wave rectifier.
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Q. Write three properties of ferromagnetic materials.
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Q. Write any two properties of electric field lines.
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Q. Derive Lens Maker's formula for a convex lens.
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Q. Define displacement current.
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Q. Derive the expression for magnetic field at a point on the axis of a circular current carrying loop.
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Q. Derive the condition for balance of a Wheatstone's bridge using Kirchhoff's rules.
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Q. Give any three differences between n-type and p-type semiconductors.
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Q. Derive the expression for energy stored in a charged capacitor.
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Q. What is a transducer in a communication system?
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Q. Explain with a circuit diagram, how to convert a galvanometer into a voltmeter.
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Q. Write any three experimental observations of photoelectric effect.
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Q. Derive the expression for the motional emf induced in a conductor moving in a uniform magnetic field.
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Q. State and explain Ohm's law.
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Q. On what factors does the capacitance of a parallel plate capacitors depends?
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Q. What is a transformer? Mention two sources of energy loss in a transformer.
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Q. Define the terms:
i) Declination
ii) Inclination or Dip.
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Q. What is the conclusion of Davison and Germer experiment on the nature of electron?
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Q. Draw the block diagram of a AM receiver.
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Q. What is the SI unit of activity.
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Q. How is the power of a lens related to its focal length?
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Q. What is the significance of Lenz's law?
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Q. Write one application of microwaves.
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Q. Mention any three applications of polaroids.
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Q. Derive the relation between electric field and electric potential due a point charge.
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Q. State Coulomb's law.
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Q. What is a NAND gate? Give its logic symbol.
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Q. Write the expression for the de-Broglie wavelength of a particle.
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Q. Name the type of lens which is used to correct?
i) Myopia ii) Hypermetropia.
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