# BSc pt III lab

## List of practicals in BSc Pt-III

List of practicals in BSc Pt-III

(Timing: Friday and Saturday, 8:00 AM – 10:00 AM)

(समय: शुक्रवार और शनिवार, सुबह ०८:०० बजे से सुबह १०:०० बजे तक।)

### Section A

Section A

~~Determination of Planck's constant by photo cell (retarding potential method using optical filters, preferably five wave length).~~- Determination of Planck's constant using solar cell.
- Determination of Stefan's constant (Black body method)
- Study of the temperature dependence of resistance of a semiconductor (four probe method).
~~Study of Iodine spectrum with the help of grating and spectrometer and ordinary bulb light.~~- Study of characteristics of a GM counter and verification of inverse square law for the same strength of a radioactive source.
- Study of β-absorption in Al foil using GM Counter.
~~To find the magnetic susceptibility of a para-magnetic solution using Quincke's method. Also find the ionic molecular susceptibility of the ion and magnetic moment of the ion in terms of Bohr magneton.~~- Determination of coefficient of rigidity as a function of temperature using torsional oscillator (resonance method).
- Study of polarization by reflection from a glass plate with the help of Nicol prism and photo cell and verification of Brewster law and law of Malus.
~~e/m measurement by helical method.~~~~Measurement of magnetic field using ballistic galvanometers and search coil. Study of variation of magnetic field of an electromagnet with current.~~~~Measurement of electric charge by Millikan's oil drop method.~~

### Section B

Section B

- Study of a R-C transmission line at 50 Hz.
- Study of a L-C transmission line
- at fixed frequency.
- at variable frequency.

~~Study of resonance in an LCR circuit (using air core inductance and damping by metal plate)~~~~at fixed frequency by varying C, and~~~~by varying frequency.~~

~~Study of the characteristics of junction diode & Zener diode.~~~~Study of~~~~Recovery time of junction diode and point contact diode.~~~~Recovery time as a function of frequency of operation and switching current.~~

- To design Zener regulated power supply and study the regulation with various loads.
- To study the characteristics of a field effect transistor (FET) and design/study amplifier of finite gain (10).
~~To study the frequency response of a transistor amplifier and obtain the input and output impenitence of the amplifier.~~~~To design and study of an R-C phase shift oscillator and measure output impendence (frequency response with change of component of R and C).~~- To study a voltage multiplier circuit to generate high voltage D.C. from A.C.
- Using discrete components, study OR, AND, NOT logic gates, compare with TTL integrated circuits (I.C.'s).
- Application of operational amplifier (OP-AMP) as : Minimum two of the following exercises (a) Buffer (for accurate voltage measurement) (b) inverting amplifier (c) Non inverting amplifier (d) Summing amplifier.