Notes and Study material for Exams
Electricity and its effects -electric intensity, potential, potential difference Electricity is the physical flow of electrons, referred to as an electrical current. Electricity is an energy carrier that efficiently delivers the energy found in primary sources to end users, who in turn convert it into energy Services. Electricity can be created in three ways: The … Read more
Electric Discharge In Gases Electrical discharge through gases is studied by using a specially designed glass tube commonly called as a discharge tube. It consists of a cylindrical glass tube having a side tube, and two metallic electrodes one at each end. These electrodes can be connected to the respective terminals of a high tension … Read more
Evolution, simply put, is descent with modification. This definition encompasses small-scale evolution (changes in gene frequency in a Population from one generation to the next) and large-scale evolution (the descent of different species from a common ancestor over many generations). Evolution helps us to understand the history of life. Evolution is not simply a matter … Read more
Relation between focal length and redius of curvature The focal length (f) of a lens is the distance between the center of the lens and the point at which the reflected Light, of a beam of light travelling parallel to the center line, meets the center line (principal axis). The radius of curvature (r) is … Read more
Reproduction and Growth – type of reproduction Living things grow and they reproduce. Growth is a way to generate the materials for reproduction. Reproduction is a way to make new organisms that can grow. Thus, the apparent “goal” of every organism is to fill the available world with its offspring, that is, with “self”. It … Read more
Control And Coordination:Plants and animals All the living organisms respond and react to changes in the Environment around them. The changes in the environment to which the organisms respond and react are called stimuli such as Light, heat, cold, Sound, smell, touch etc. Coordination in plants Coordination refers to ordered working of different but interrelated … Read more
Endocrine Glands: harmone and their function The Endocrine System is made up of glands that produce and secrete HORMONES, chemical substances produced in the body that regulate the activity of cells or organs. These hormones regulate the body’s Growth, Metabolism (the physical and chemical processes of the body), and sexual development and function. The hormones … Read more
Sociology– Meaning, Scope and nature, Importance of its study. Relation with other Social Sciences Sociology is a discipline in social sciences concerned with the human Society and human social activities. It is one of the youngest social sciences. Auguste Comte, a French social thinker, is traditionally known as the ‘Father of Sociology’ as he coined … Read more
Society, Community, Association, Institution, Social group, Folkways and Mores Society society is an organization of people whose associations are with one another. MacIver describes society as a web of relationships. There are a number of definitions of society. Most of them point to the following characteristics of society. The first condition for calling a set … Read more
Social Research And Techniques -Objective of Social Research, Use of scientific method to study of Social Phenomena, tools and techniques of data collection- Observation, Interview, Questionnaire, Schedule Man by nature is inquisitive, and humans have an extraordinary capacity to exercise rational judgment and probe the realities of the world around us. Inherent in humans is … Read more