Notes and Study material for Exams
The Solar System consists of the Sun and its eight main planets, their satellites, asteroids, comets, meteors and other dwarf planets. The Sun is at the one of the two “centers” of The Solar System and the planets revolving around it in elliptical orbits. The sun is in the centre of the solar system. It … Read more
Development of non-conventional sources of energy is of prime importance for the sustainable and Energy Resources are depleting at an accelerated rate and non-conventional resources could play a leading role in Energy Security in the state. Non-Conventional energy resources could minimise the transmission cost and energy divide between the remote locations [su_heading size=”21″]Solar[/su_heading] Rajasthan … Read more
Semiconductor Devices:- Semiconductor devices are electronic components that exploit the electronic properties of semiconductor materials, principally silicon, germanium, and gallium arsenide, as well as organic semiconductors. Semiconductor devices have replaced thermionic devices (vacuum tubes) in most applications. There are two basic groups or classifications that can be used to define the different semiconductor types: Intrinsic … Read more
The photoelectric effect The photoelectric effect is the emission, or ejection, of electrons from the surface of, generally, a Metal in response to incident Light.A material that can exhibit The photoelectric effect is said to be photoemissive, and the ejected electrons are called photoelectrons. The process was discovered by Heinrich Hertz in 1887. Attempts to … Read more
The availability of reliable, quality and affordable power helps in the rapid agriculture, industrial and overall Economic Development of the state. The total installed utility power generation capacity is nearly 20,000 MW in the state. Only 11,400 MW is the committed power supply to the state with power purchase agreements. Rest of the capacity … Read more
Petroleum, natural gas, coal, nitrogen, uranium and water power are examples of conventional sources of energy. They’re also called non-renewable sources of energy and are mainly fossil fuels, except water power. Rising Growth of Population has created a tremendous pressure on the conventional Resources of energy and thus the Concept of Sustainable Development get prominent … Read more
What are natural Resources ? Natural Resources are useful raw materials that we get from the Earth. They occur naturally, which means that humans cannot make natural resources. Instead, we use and modify natural resources in ways that are beneficial to us. The materials used in human-made objects are natural resources. Some examples of natural … Read more
Beginning of the Universe started about 13.6 billion years ago,when the Big Bang created the universe from a point source. During this process, Light Elements, like H, He, Li, B, and Be formed. From this point in time, the universe began to expand and has been expanding ever since. Concentrations of gas and … Read more
SDO is a NASA mission launched on February 11, 2010 which will observe the sun for over five years. The observatory is a part of the living with a star program. SDO’s goal is to understand the sun’s influence on earth and near-earth space by studying the solar Atmosphere on small scales of space and … Read more
Calendars in India India is a country with a rich and diverse culture, and this is reflected in the many different calendars that are used here. The most common calendar is the Gregorian calendar, which is used for official purposes and for everyday life. However, there are also many other calendars that are used by … Read more