Electronic devices and communication system
Electronic Devices and Communication Systems
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Formation of Himachal and Aryan invasion. By PK Nirala
Formation of Himachal Pradesh This is a history of about 5o million years back when earth was a very very hot molten planet and all the...
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Formation of Himachal Pradesh This is a history of about 5o million years back when earth was a very very hot molten planet and all the...
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Light and Ray optics Light Light is a form of energy eyes. which produces the Sources of light are of three types-thermal s...
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