# 2nd Semester Physics Notes PDF, Jharkhand Polytechnic Notes PDF

Basic science forms the foundation of Engineering. In particular, Physics provides
fundamental facts, principles, laws, and the proper sequence of events to streamline Engineering
knowledge.

You can download the handwritten notes of Engineering Physics-II for the second semester of 03 Years Diploma Engineering.

These notes are prepared by the students of Jharkhand Polytechnic based on the syllabus issued by the Jharkhand University of Technology (JUT), Ranchi.

You can join our Facebook and Telegram Group of the Jharkhand Polytechnic Students Club to connect with all the Polytechnic students of Jharkhand.

## Light- Polytechnic Physics Notes

Students have to learn about the Properties of light like reflection, and refraction, along with Snell’s law, the physical significance of the refractive index, the definition of dispersion of light along with
ray diagram.

Students have to also practice Numericals on the refractive index. It will help them to prepare for the Jharkhand polytechnic semester exam numerical.

## Electric Field and Potential, Capacity & Condensers

### Electric Field

You have to learn about the Electric charge, Coulomb’s inverse square law, Definition of unit charge, Electric field, Electric lines of force and their properties, Elect field intensity, Electric flux, Electric flux
density.
(Numericals on Coulomb’s law, Electrical Intensity)

### Electric Potential

Concept of potential, Definition and unit, Potential due to point charge using integration method, Potential difference between two points, the Definition of dielectric strength and breakdown potential.
(Numericals on electric potential)

### Capacity & Condensers

Electrostatics capacity & its S.I unit, Capacity of parallel plate condenser, Condensers in series & parallel (Formula only, no derivation), Uses of condensers.
(Simple problems)

## Current Electricity

Ohm’s law, Resistance and its unit, Specific resistance, Factors affecting resistance, Kirchhoff’s law and its application to Wheat stone bridge circuit.

## Fibre Optics

Introduction, Total internal reflection, critical angle, acceptance angle. Structure of optical fibre, Numerical Aperture, Fiber optic materials, Types of optical fibres, Applications in communication systems.
(Numerical on the critical angle, numerical aperture)

## Band Theory of Solids

Energy levels in solids, Valence & conduction bands, forbidden gap, Conductors, Semiconductors and Insulators, Intrinsic and Extrinsic Semiconductors, p-type and n-type semiconductors, P-N junction diode-forward and reversed biased characteristics.

## Modern Physics

### Photo electricity

Concept of the photon, Plank’s hypothesis, properties of the photon, photoelectric effect, Laws of the photoelectric effect, work function, Einstein’s photoelectric equation( no derivation), Basic Concept of Solar Energy.
(Numericals on Energy of a photon, work function, photoelectric equation)

### Laser

Properties of laser, Characteristics and applications of Laser

### X-rays

Introduction to X-rays, production of X-rays using Coolidge tube, the minimum wavelength of X-rays, properties and applications. of X-rays
(Numericals on the minimum wavelength of x-rays)

## Introduction to nanotechnology

Definition of nanoscale, nanometer & nanoparticle, applications of nanotechnology- electronics, automobiles, medical, textile, cosmetics, environmental, space and defence.

## Non- Conventional Sources of energy

Introduction- Non-Renewable and renewable (Alternate) energy sources, Examples- Solar Energy, Wind Energy, Tidal Energy, Geo-Thermal Energy and Bio-Mass. Advantages and disadvantages of renewable energy.