## Departmental Laboratories

Physics lab, common for all the branches of B.Tech. First year, is a well established lab to impart the fundamental understanding of Physics. B.Tech. Physics lab contains total 10 experiments, 05 are related to dark room while remaining 05 belongs to light room. It has following 10 equipments.

• Newton’s Ring
• Diffraction Grating
• Specific rotation of cane sugar solution using Polarimeter
• Refractive Index of water using laser light
• Fresnel’s Biprism
• Carey Foster Bridge
• Tangent Galvanometer
• Energy Band Gap using PN junction diode
• Stefan’s Law by Electrical method
• Coefficient of Viscosity of water by Poiseuille’s method

### General Physics Lab

Students assigned the general laboratory work in first mid semester, will perform at least eight (08) experiments of the following:

• Determination of band gap of semiconductor from temperature dependence of resistivity using Four Probe Method.
• Determination of Brewster Angle and estimation of refractive index of the given transparent material.
• Estimate the diameter of the given wires using He-Ne laser.
• Estimate the wavelength of the He-Ne laser using the diffraction pattern formed due to the grooves of a scale.
• To determine specific rotation of a given solution at different wavelengths (or different solution at a given wavelength).
• Transfer characteristics of UJT & FET.
• Design of CE Amplifier.
• Design of Regulated Power Supply.
• Design of simple logic gates using transistors.

### Programming and General Physics lab

##### Seminar and Project

Students assigned the programming and Condensed Matter Physics laboratory work for 2nd semester, will perform at least eight (08) experiments of the following: (04 from each unit).

##### Unit - A
• Solution of transcendental or polynomial equations by the Newton Raphson method.
• Linear curve fitting and calculation of linear correlation coefficient.
• Numerical integration using the Simpson’s method.
• Numerical first order differentiation of a given function.
• Matrix inversion and solution of simultaneous equation
##### Unit - B
• To determine resolving/dead time of a GM counter by double source method.
• Study of Hall Voltage as a function of probe current and magnetic field and determination of Hall Coefficient and carrier concentration in given sample.
• Preparation of nanocrystalline powder specimen by ball milling: analysis of their x-ray spectra and particle size estimation by Scherrer formula.
• Magnetic parameters of a magnetic material by hysteresis loop tracer.
• Dielectric constant of insulating and ferroelectric materials at room and elevated temperatures

### Microprocessor & Electronics Lab

Students assigned the Microprocessor and Electronics laboratory work for 3rd semester, will perform at least eight (08) experiments of the following: (04 from each unit)

##### Unit - A
• Temperature to frequency conversion using a thermister and astable multivibrator circuit.
• Operational Amplifier characteristics using IC 741.
• Capacitance measurement using IC 555.
• Experiments on MUX, DEMUX, Decoder and shift register.
• JK Flip-Flop and up-down counter.
• Fiber optic communication.
##### Unit - B
• A/D converter interfacing and AC/DC voltage / current measurement using microprocessor 8085/8086.
• PPI 8251 interfacing with microprocessor for serial communication.
• D/A converter interfacing and frequency / temperature measurement with microprocessor 8085 / 8086
• Program of 8085/ 8086 to solve a Boolean Equation which rep. Combinational logic.
• Arithmetic operations using microprocessors 8085 / 8086

### Mechanics Lab

• Determination of Modulus of Rigidity of the material by Statistical method.
• Determination of Young's Modulus of the Material by Flexure Method.
• Determination of Coefficient of Viscosity of Water.
• Determination of Surface Tension of Water.
• Determination of Acceleration due to gravity by Compound Pendulum.
• Determination of frequency of A. C. Mains with the help of sonometer.
• Measurement of height of a tower with a sextant.
• Study of oscillations of mass under different combination of springs.
• To find the capacity of a condenser with electrical vibrator using A.C. supply of 50 Hz.
• To study moment of inertia of a body with the help of inertia table.

### Optics Lab

• Determination of wavelength of sodium light by Newton's Rings.
• Determination of Specific Rotation of Sugar solution by half shade Polari meter.
• Determination of refractive index of a material of a prism by spectrometer.
• Verification of Brewster's law.
• Determination of wavelength of sodium light of by using Fresnel's Biprism.
• Determination of wavelength of mercury light by using Plane diffraction grating.
• To determine the dispersive power of a plane transmission diffraction grating.
• To determine the resolving power of a telescope.
• Determination of refractive index of water using laser.
• To determine the focal length of combination of two lenses separated by a distance d with the help of a nodal slide and to verify the formula:
1/F = 1/F1+1/F2-d/F1F2.

### Electronics and Thermal Physics Lab

• To study the frequency response of RC coupled amplifier.
• To draw the characteristic of PN junction diode.
• To study the characteristics of a transistor in CE, CB and CC configurations.
• To study of Regulated Power Supply.
• To calibrate an oscillator (Hartley/Phase shift) using CRO.
• To draw the characteristic of a Zener diode.
• Determination of Stefan’s constant.
• To study the characteristics of a thermocouple.
• To determine the mechanical equivalent of heat by Callender and Barne’s constant flow method.
• To find the mechanical equivalent of heat using Joules calorimeter.

### Electricity and Magnetism Lab

• Study of characteristics of a ballistic Galvanometer.
• Measurement of low resistance by Carey-Foster Bridge.
• Measurement of inductance using impedances at different frequencies.
• Determination of energy band gap of a semiconductor using p-n junction diode.
• To measure high Resistance by the method of Leakage of a condenser.
• To determine the coefficient of Mutual Inductance between two coils.
• To determine the coefficient of Self Inductance of a single coil.
• To determine the capacity of condenser by absolute method.
• To study of characteristic of a choke.
• Measurement of inductance by Anderson's bridge.