UNIT XX: EXPERIMENTAL SKILLS
Familiarity with the basic approach and observations of the experiments and activities:
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$1.$ Vernier calipers-its use to measure the internal and external diameter and depth of a vessel
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$2.$ Screw gauge-its use to determine thicknes/ diameter of thin sheet/wire
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$3.$ Simple pendulum-dissipation of energy by plotting a graph between the square of amplitude and time
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$4.$ Metre Scale - the mass of a given object by the principle of moments
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$5.$ Young’s modulus of elasticity of the material of a metallic wire
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$6.$ Surf ace 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 terminal velocity of a given spherical body
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$8.$ Speed of sound in air at room temperature using a resonance tube
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$9.$ Specific heat capacity of a given (i) solid and (ii) liquid by method of mixtures
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$10.$ The resistivity of the material of a given wire using a metre bridge
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$11.$ The resistance of a given wire using Ohm’s law
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$12.$ Resistance and figure of merit of a galvanometer by half deflection method
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$13.$ The focal length of: (i) Convex mirror (ii) Concave mirror, and (iii) Convex lens, using the parallax method
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$14.$ The plot of the angle ofdeviation vs angle of incidence for a triangular prism
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$15.$ Refractive index of a glass slab usinq a travelling microscope
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$16.$ characteristic curves of a p-njunction diode in forward and reverse bias
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$17.$ characteristic curves of a Zener diode and finding reverse break down voltage
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$18.$ Identificationn of Diode, LED. Resistor. A capacitor from a mixed collection of such items
BETA
