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State with reasons whether the following statements are True or False. i) Sound wave (longitudinal wave) propagation is the most preferred mode in modern communication systems. ii) Scanning format at TV transmitter and receiver end need not be the same. iii) Skin depth increases with frequency. iv) Modulation can be used to reduce noise present in the input signal. v) Interleaving of messages helps in reducing hum noise in a signal. vi) Splicing involves soldering. vii) CCD camera requires electron gun for scanning. viii) Image frequency can be rejected by tuned IF amplifier. ix) Centronic port of a computer is a serial port. x) Blue tooth works only for mobile devices.
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