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Class 12
Class 12 Refractive Index of a LiquidTo find the refractive index of a liquid using convex lens by parallax method. Concave Lens - Focal LengthTo find the focal length of a concave lens using a convex lens by (a) Lens in contact method (b) Lens out of contact method Convex Mirror - Focal LengthFind the focal length of a convex mirror using a convex lens Refraction through a Prism(A) To study the angle of deviation (d) with angle of incidence (i) and to find the angle of minimum deviation (D) from i-d curve. (B) To find out the refractive index of the material of the prism using A and D. Ohm's law and resistanceTo determine resistance per cm of a given wire by plotting a graph of potential difference versus current. The potentiometer- Comparison of emfTo compare the E.M.F.s of two given primary cells using potentiometer Transistor characteristicsTo study the characteristics of a common n-p-n (or p-n-p) transistor and to find out the values of current and voltage gains. The Concave mirror - u-v methodTo determine the focal length of athe given concave mirror by u-v method. Diode characteristicsTo draw the I-V characteristics of a p-n junction diode in forward bias and reverse bias. AC SonometerTo find the frequency of the A.C. mains with a sonometer (and an electromagnet). Metre Bridge-Resistance of a wireTo find the resistance of a given wire using metre bridge and find the specific resistance of the material of the wire Metre bridge- Law of combination of resistorsVerify the laws of combination (series/parallel) of resistances The Potentiometer-Internal resistance of a cellTo find the internal resistance of a given cell Figure of Merit of a galvanometerTo determine the resistance of a galvanometer by half deflection method and to find its figure of merit Zener DiodeTo draw the characteristic curve of a zener diode and to determine its reverse break down voltage. Conversion of Galvanometer to AmmeterTo convert the given galvanometer (of known resistance and figure of merit) into an ammeter of desired range and to verify the same.