rawan239ALLAHABAD NOTES

Solar system, relative position of Earth with respect to Sun and other planets, movement of earth and moon in solar system, lunar and solar eclipses

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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 Solar system, relative position of Earth with respect to Sun and other planets, movement of earth and moon in solar system, lunar and solar eclipses

Uttar Pradesh :Geographical location for Uppcs Upper Subordinate Exam

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Uttar Pradesh is the fifth largest State of India after Rajasthan, Maharashtra, Madhya Pradesh and Andhra Pradesh in area. For administrative purposes, the state is divided into 18 divisions and 75 districts. There are 303 sub divisions, 313 Tehsils, 11 Municipal Corporation, 689 Cities, 820 community development blocks, 52,000 Gram Sabha,  1,07,452 revenue villages, out … Read more Uttar Pradesh :Geographical location for Uppcs Upper Subordinate Exam

Concept and nature of sound.Wave length and frequency, infrasonic and Ultrasonic sounds, Sources of Infrasonic sound In nature, Ultrasonic sound characteristics and some applications.

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Sound is a longitudinal wave, in which the particles oscillate to and fro in the same direction of wave propagation. Sound waves cannot be transmitted through vacuum. The transmission of sound requires at least a medium, which can be solid, liquid, or gas. Newton to derive a relation for the velocity of sound in a gaseous … Read more Concept and nature of sound.Wave length and frequency, infrasonic and Ultrasonic sounds, Sources of Infrasonic sound In nature, Ultrasonic sound characteristics and some applications.

System of Units: MKS, CGS and SI

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Measurement of any physical quantity involves comparison with a certain basic, arbitrarily chosen, internationally accepted reference standard called unit. The result of a measurement of a physical quantity is expressed by a number (or numerical measure) accompanied by a unit. A unit of measurement is a definite magnitude of a quantity, defined and adopted by … Read more System of Units: MKS, CGS and SI

Definition of speed,velocity, gravity, mass, weight, force, impact, work, power and energy

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Speed An object is said to be in motion if it changes its position with time, with respect to its surroundings.Speed is defined as the distance moved per unit time, i.e Speed =Distance /Time When we say that an object is at rest or in motion,then this statement is incomplete and meaningless. Basically, rest & … Read more Definition of speed,velocity, gravity, mass, weight, force, impact, work, power and energy