purchase of equipments for physics lab:-1 torsion pendulum 6 inch diameter (with metal disc and balancing weights with portable standoff height 24inch) 2 sonometer 12.512.5 110cm (complete set consisting of sonometer ,electromagnet with step down ransformer, weight and clamp stand for holding electromagnet) 3 travelling microscope 2 motion (brass tubes horizontal scale length 18cm and vertical scale length 15cm, microscope with rack and pinion arrangement, vernier constant 0.001cm, with heavy iron base) 4 electrical vibrator for frequency of ac mains (complete set with table mountable pulley and pan and 510gm weight set) 5 reading telescope, brass tube with 1 inch diameter with rack and pinion arrangement complete with heavy tripod stand, pillar height 18inch 6 spectrometer 6inch vernier to 60 seconds of arc, achromatic objectives with rack and pinion arrangement 7 semiconductor diode (complete set with inbuilt regulated 0-25v power supply, ge and si diode and meters 8 diffraction grating 15000 lines per inch 9 sextant apparatus, brass scale divided in 120 degrees to 12 seconds, without stand 10 digital balance 5kg capacity lc 1gm 11 study of the ripple factor in a dc power supply (complete set with 220v/ 9-0-9v step down transformer, dc and ac voltmeter and 3 different load resistances) 12 extra electromagnet for sonometer experiment (copper wound) with 5mm banana terminals and holding rod 13 cathode ray ocilloscope 30 mhz, dual trace, analog display 14 hartley oscillator with digital frequency counter 15 double slit with stand mountable on optical bench (without bench) 16 prism edf 17 common base amplifier.
