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state board

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Mind map: state board communication systems -> propagation of electromagnetic waves (ground wave , sky wave, space wave), (modulation ), antennas, tranmission and reception (radio transmission, radio reception), television (vidicon camera tube, scanning and synchronising), monochrome picture tube, monochrome tv transmission, monochrome tv receiver, radar (principle of radar, transmission and reception), analog and digital communication (analog, digital, modem, fax, wire and cable, fibre optical communication, satellite communication)

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New inventions : the flying car is real now!

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ref image

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image equation pattern circle vector image silverchair procreate horizontal parallel straight drawing photos

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Sir

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Different forms of equation of straight line

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Different forms of equation of straight line