Composition and size of nucleus atomic masses isotopes isobars isotones

Composition and size of nucleus atomic masses

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Composition and size of nucleus, atomic masses, isotopes, isobars; isotones. Radioactivity - alpha, beta and gamma particles/rays and their properties; radioactive decay law. Mass - energy relation, mass defect; binding energy per nucleon and its variatio n with mass number, nuclear fission and fusion. Contd...P/7 - 7 - Unit XIX: Electronic Devices Semiconductors; semiconductor diode: I - V characteristics in forward and reverse bias; diode as a rectifier; I - V characteristics of LED, photodiode,
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solar cell, and Zener diode; Zener diode as a voltage regulator. Junction transistor, transistor action, characteristics of a transistor; transistor as an amplifier (common emitter configuration) and oscillator. Logic gates (OR, AND, NOT, NAND and NOR). Tr ansistor as a switch. Unit XX: Communication Systems Propagation of electromagnetic waves in the atmosphere; Sky and space wave propagation, Need for modulation, Amplitude and Frequency Modulation, Bandwidth of signals, Bandwidth of Transmission medium, Basic Elements of a Communication System (Block Diagram only). Contd ...... P/8 - 8 - SECTION B Unit
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XXI: Experimental Skills Familiarity with the basic approach and observations of the experiments and activities: 1. Vernier c allipers its use to measure internal and external diameter and depth of a vessel 2. Screw gauge its use to determine thickness/diameter of thin sheet/wire. 3. Simple Pendulum - dissipation of energy by plotting a graph between square of amplitude and time. 4. Metre Scale - mass of a given object by principle of moments 5. Young's modulus of elasticity of the material of a metallic wire 6. Surface tension of water by capillary rise and effect of detergents
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7. Co - efficient of Viscosity of a given viscous liquid by measuring te rminal velocity of a given spherical body. 8. Plotting a cooling curve for the relationship between the temperature of a hot body and time. 9. Speed of sound in air at room temperature using a resonance tube. 10. Specific heat capacity of a given (i) solid and (ii) liquid by method of mixtures. 11. Resistivity of the material of a given wire using metre bridge. 12. Resistance of a given wire using Ohm's law 13. Potentiometer (i) Comparison of emf of two primary cells. (ii) Internal resistance of a cell. Contd...P/9
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- 9 - 14. Re sistance and figure of merit of a galvanometer by half deflection method. 15. Focal length of: (i) (ii) (iii) Convex mirror Concave mirror, and Convex lens 16. Using parallax method. Plot of angle of deviation vs angle of incidence for a triangular prism. 17. Refractive index of a glass slab using a travelling microscope 18. Characteristic curves of a p - n junction diode in forward and reverse bias. 19. Characteristic curves of a Zener diode and finding reverse break down voltage.
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20. Character istic curves of a transistor and finding current gain and voltage gain 21. Identification of Diode, LED, Transistor, IC, Resistor, Capacitor from mixed collection of such items. 22. Using multimeter to: (i) (ii) (iii) (iv) Identify base of a t ransistor Distinguish between npn and pnp type transistor See the unidirectional flow of current in case of a diode and an LED. Check the correctness or otherwise of a given electronic component (diode, transistor or IC). ############
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