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Group (A) -Physical Science
(I)System of Units: MKS, COS and SI
(II)Definition of speed,velocity, gravity, mass, weight, force, impact, work, power and energy.
(III)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
(IV) 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.
