supply, installation and commissioning of equipments / experimental setup / items at physics laboratory under science and humanities department, ttaadc polytechnic institute, khumulwng, west tripura. supply, installation and commissioning of equipments / experimental setup / items at physics laboratory under science and humanities department, ttaadc polytechnic institute, khumulwng, west tripura , vernier calipers: stainless steel, vernier reading to 0.01cms with wheel drive , screw guage: stainless steel, 0-25mm, 0.01mm, velvet box , spherometer: heavy type double disc , convex mirror: 50 / 60 mm dia , concave mirror: 50 / 60 mm dia , convex lens: 10 cm focal length , optical bench: double bar type, metallic with s.s. scale 1.5 meter long, 2 lens holder & 2 pin holder , plane mirror for reflection experiment: fitted in wooden block , to verify triangle and parallelogram law of force ( complete set up ) : pulley and slotted weight complete , to find the co-efficient of friction between wood and glass using a horizontal board ( complete set up ) : 60 cm x 18 cm with pan and pulley, weight 20gm x 5 , to verify law of conservation of mechanical energy ( pe to ke ) . ( complete set up ) : with double inclined ramp, small steel sphere, level spirit , to determine force constant of a spring using hook’s law ( set up ) : with spring and pointer complete , to find the viscosity of a given liquid ( glycerin ) by stoke’s law. ( complete set up ) : tube- 100cm length, 3.5 cm dia. steel sphere- dia 0.2 cm to 0.5 cm with stand and digital clock , copper stream boiler: 2-3 l, 9.5 inch height with heating element , battery eliminator: 2, 4, 6, 8, 10, 12 volt dc output. , v-i characteristics of a semiconductor diode ( ge, si ) and determine its knee voltage ( complete set up ) : 2 dc regulated power supply 0-3 v / 150ma, two round meters with patch chords. , frequency of ac main using electrical vibrator ( complete set up ) : with solenoid fitted with steel rod , voltmeter: 0-5 volt mr80 , milli-voltmeter: 0-50 mv mr80 , ammeter: 1 amp mr80 , ammeter: 3 amp mr80 , table galvanometer: 30-0-30 mr80 , dcc wire copper coil: 22swg 500gm coil , standard resistance: • 1k - 50 nos. • 10k – 50 nos. • 100k - 50 nos. • 100 ohm - 50 nos. • 150 ohm - 50 nos. • 220 ohm - 50 nos. • 330 ohm - 50 nos. • 470 ohm - 50 nos. , transistor input & output characteristics ( complete set up ) : 0-10vdc / 150ma 0-1vdc / 150ma four round meters for voltage and current with power supply , zener diode apparatus ( complete set up ) : two meters for voltage and current in forward and reverse bias with power supply , bridge rectifier ( complete set up ) : half wave and full wave, inbuilt variable ac supply, load: 50 ohm to 500 ohm, output voltage 9-0-9v , bread board: 840 tie point: 128 groups of 5 connected terminals, 8 bus of 25 connected terminals. , diode: 1n4007. , led: rgb 5 mm pack of 100. , connecting wire for bread board: 1 set of 15 meters each red, blue, green, black, yellow, copper.