Labs

Undergraduate course includes following experimental setup:

Experiment	Instrument
To study the variation of resistivity of a semiconductors with temperature and hence to determine the band gap Apparatus: (1) Four Probes set-up with oven (2) Semiconducting Samples (Ge or Si crystal in the form of a chip). (3) Thermometer
To study the Hall Effect and hence to determine the following quantities :(i) Hall coefficient. (ii) Type of majority charge carrier (iii) Charge carrier density, η (iv) Carrier mobility, µ of the given sample Apparatus :(1) Hall probe, (2) Hall effect set-up (3) Electromagnet (4) Constant current power supply (5) Digital Gaussmeter.
(i) Determination of reverse saturation current Io and material constant η. (ii) Determination of temperature coefficient of junction voltage and energy band-gap Apparatus: (1) Study of p-n junction model PN-01
To determine the wavelength of laser light by using transmission diffraction grating. (b) Given the wavelength of laser light to determine the number of lines in a transmission diffraction grating. Apparatus: (1) A He-Ne laser source (2) A transmission diffraction grating (3) Screen
To draw the I-V characteristics of a solar cell Apparatus: (1) A solar cell (2) D.C. Voltmeter (3) D.C. Milliammeter (4) 100 W lamp (5) Variable Resistor (6) connecting wires.
To draw hysteresis (B-H) curve of a given sample of ferromagnetic material and determine the Coercivity, Retentivity and Saturation magnetization Apparatus: (i) C.R.O., (ii) ferromagnetic specimen, (iii) Solenoid and (iv) Hysteresis loop tracer
(i) Determine the magnetic susceptibility, χ of a paramagnetic solution, (ii) Calculate mass susceptibility of a given paramagnetic solution Apparatus: (1) Electromagnet (2) DC power supply (0-90 V) (3) Digital Gauss meter (4) Hall probe for magnetic strength measurement (5) Travelling Microscope (6) Quincke’s tube with stand. (7) Sample: MnSO4.H2O
Verification of Bohr’s atomic orbital theory Apparatus: (1) Frank and Hertz experiment kit (2) Tetrode tube filled with Argon vapour (3) CRO
To determine the Planck’s constant Apparatus: (1) Study of Planck’s constant model (PCA-01), (2) Sample LED and (3) Oven with RTD sensor.
To Determine the Stefan’s constant Apparatus: (1) Stefan’s constant unit and (2) Blackbody radiation copper plates with thermocouple
To determine the value of Lande’g factor using Electron Spin Resonance spectrometer Apparatus: (1) ESR spectrometer, (2) Helmholtz coils fitted with RF coil, (3) Sample- DPPH (Diphenl-Pycrilhydrazyl), (4) R-F oscillator (10 MHz to 19 MHz)
To determine the Magnetoresistance of Semiconductors Apparatus: (1) Magnetoresistance Set-up, (2) Four Probe arrangement, (3) Sample (p-type Ge Crystal), (4) Hall Probe Multipurpose Stand, (5) Electromagnet, (6) Constant Current Power Supply and (7) Digital Gaussmeter
Study of dielectric constant and determination of Curie temperature of a ferroelectric sample Apparatus: 1. Dielectric constant measurement kit, 2. Hall probe (Ge: p-type) with temperature sensor, 3. Sample (PZT), 4. Aluminum foil, 5. High temperature oven