Tnpsc and Upsc Notes Pdf
Pravin Babu R 
Introduction to Current Electricity The motion of charges is called Electric Current. The current electricity is the study of the flow of electric charges. Alessandro Volta (1745 – 1827) invented the electric battery that generated the first steady flow of electric current. Electric Current The matter is made of atoms. Each atom consists of a … Read more
Natural Magnets Artificial Magnets These are found naturally and they are irregular in shape. These are made by man which is a definite shape based on the usage. The strength of the magnet is natural and it is difficult to change. Artificial Magnet is made with specific strength as required. Natural Magnets are long-lasting, i.e … Read more
Heat and Temperature physics: Introduction This article is written for the Tnpsc exam for the topic ‘Heat’, in General studies. Science part (Physics). This note is for quick revision purpose only, kindly refer to Samacheer Kalvi Book. The measurement of warmness(hotness) or coldness of a substance or object is called its temperature. Temperature is also … Read more
Elements and Compounds in Chemistry Types of Pure Substances For a normal person, a pure substance means it is free from adulteration. Even Milk, Air, Water, etc. are not pure. In some cases, there are pure substances or single substances such as distilled water, sugar, baking soda, etc. Also Copper used for making electric wire … Read more
Laser This article is compiled for the topic “ Laser” in General Studies Tnpsc. This note is compiled from Samacheer Kalvi Book. This note is for revision only. Kindly refer to the Original Samacheer Kalvi book for more clarity. Laser meaning or laser full form is light amplification by the stimulated emission of radiation. The … Read more
Imagine our world without science and all these inventions and discoveries? How would it look like? You would not do things you do now such as job, work, going to school, theatres, etc. Or you would eat breakfast, lunch, or dinner sitting at a table, where the food is cooked for buying your favorite dish … Read more
This article is written for the Tnpsc exam for the topic ‘Sound’, in General studies. Science part (Physics). This note is for quick revision purposes only, Kindly refer to Samacheer Kalvi Book. What is sound in physics? Sound is a type of energy that creates a sensation in our ears. Sound in physics is the … Read more
Basics of Nuclear Science Here’s a table summarizing the basics of nuclear physics, covering important concepts, terms, and their significance: Concept/Term Explanation Significance Nucleus The central core of an atom, made up of protons and neutrons. The nucleus contains most of the atom’s mass and is responsible for its nuclear properties. Proton A positively charged … Read more
The universe is all of space and time and its contents. The universe consists of all of existence, fundamental interaction, physical processes, and all forms of energy and matter and the structures they form, from the sub-atomic particles to entire galaxies. Three most basic types of Universe are and is concerning three possible shapes, that … Read more
// Test or Dummy Post Entrepreneurship development The government of Tamil Nadu must select 100, future Entrepreneurs from various fields Allocate the total budget of 200 crores. Create and register 100 companies, make each of the 100 future Entrepreneurs as the Interm CEO. The CEO is only answerable to the Chief Minister of Tamil Nadu. … Read more