+2 Practical Physics Vol II 
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Contents
SECTION  18 
A2 To use a Wheatstones bridge meterbridge for finding an unknown resistance  29 
A4 To determine the specific resistance of the material of a wire using a meterbridge  35 
A6 To study the laws of resistances in series and in parallel using Post Office Box  43 
A8 To determine the internal resistance of a primary cell using a potentiometer  50 
A10 To find the resistance and figure of merit of a given galvanometer by Half Deflection  57 
A12 To determine the frequency of AC mains using a sonometer Taking the frequency  70 
B13 To find the focal length of a concave mirror by Parallax Method using one needle  76 
B16 To find out the focal length of a Convex Mirror using convex lens  93 
B19 To determine angle of minimum deviation for a given prism by plotting  101 
B20 To determine the refractive index of a transparent liquid Water and b a glass slab  108 
B22 To draw the conduction characteristic of a zener diode and to determine its reverse  119 
A1 To measure the resistance and impedance of an inductor with and without iron core  125 
A3 To use a multimeter for i continuity test of a cartridge fuse a slide wire bridge  131 
A4 To assemble a household circuit comprising three bulbs three onoff switches  137 
B15 To find the value of v for different values of u in case of a convex lens and hence  84 
Common terms and phrases
adjust ammeter ampere angle of incidence Apparatus balance point battery capacitor centre charge coil collector colour concave lens concave mirror condenser conductor constant convex lens current flowing curvature curve deflection direction electric electrolyte electrons emitter error experiment figure of merit galvanometer given glass slab graph hence image locating needle image needle index correction inductor internal resistance jockey junction diode knitting needle Least count Leclanche cell marked mean measured metre multimeter negative null point object needle Observations and Calculations Ohm's Law ohms optical bench ORAL QUESTIONS pn junction parallax parallel pendulum pointer polaroid position potential difference potentiometer potentiometer wire principal axis prism radius range reading refractive index resistance box resistor reverse bias rheostat rough focal length rubber string S.No Sample Project scale screen semiconductor shown in Fig specific resistance surface temperature terminal transistor unknown resistance velocity vibration voltage voltmeter volts Wheatstone bridge Zener diode zero