Notes – Page 20

Chapter 6. Modern Physics

February 13, 2021December 31, 2020 by ap-admin

Structure of Atoms - Structure of An Atom * An Atomic Number is the number of protons in an atom. * The arrangement of electrons in various energy levels of an atom known as electronic configuration * The maximum number of electrons in any energy level of the atom is given by 2n2. * The ... Read more

Chapter 5. Heat

March 9, 2021December 31, 2020 by ap-admin

Matter In Our Surroundings - Inter Conversion of States of Matter * Inter conversion of states is the phenomenon of the change of matter from one state to another and back to original state, by altering the temperature. * The process where a solid changes to a liquid is called melting. * Latent heat of ... Read more

Chapter 4. Electricity and Magnetism

March 9, 2021December 31, 2020 by ap-admin

Work And Energy - Energy * Energy is defined as the capacity to do work. * The various forms of energy include kinetic energy, potential energy, thermal or heat energy, electrical energy and chemical energy. * Energy stored in an object due to its position or place is known as potential energy. * The gravitational ... Read more

Chapter 3. Sound

March 9, 2021December 31, 2020 by ap-admin

Sound - Production and Propagation of Sound * Sound is form of energy that produces the sensation of hearing in our ears. * Sound is produced due to the vibration of objects. * Intensity of sound is the amount of sound energy incident per unit time per unit area. * Sound propagates through a medium. ... Read more

Chapter 2. Light

March 22, 2021December 31, 2020 by ap-admin

Light- Refraction Basics * The tendency of light to bend at the point of separation of two media is called refraction. * The ratio of velocity of light in the first medium to that in the second medium is known as the refractive index of the second medium with respect to the first medium. * ... Read more

Chapter 1. Force Work Power and Energy

March 9, 2021December 31, 2020 by ap-admin

Motion- Graphical Representative of Motion * Motion can be represented using a line graph comparing dependent quantities and a common independent quantity. * Time is always taken as the independent variable in graphical representation if motion. * A distance - time graph represents the change in the position of an object with the time. * ... Read more

Chapter 5. Consumer Rights

March 4, 2021December 31, 2020 by ap-admin

Consumer: Why Consumer Movements? * Rules and regulations are required to protect people who are in a weak position. * Consumers also need to be protected. * Individual consumers are often scattered and not united, which makes them easy targets for exploitation. * Shopkeepers refuse to take back defective goods once they are sold. Consumers ... Read more

Chapter 4. Globalisation and the Indian Economy

March 4, 2021December 31, 2020 by ap-admin

Globalisation – Introduction * India has changed tremendously in the last two decades. * Till the 1990’s, there was hardly any choice of goods, except for what was produced in the country. * Today there is wide range of commodities for customers in India to choose from. * One major reason for this choice is ... Read more