UNIT VII: DUAL NATURE OF RADIATION AND MATTER
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Hertz and Lenard’s observations
UNIT IX: SEMICONDUCTOR ELECTROCNICS
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Characteristics of transistor
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transistor as an amplifier (CE configuration)
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basic idea of analog and digital signals
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Logic gates (OR. AND. NOT. NAND and NOR)
UNIT X: COMMUNICATION SYSTEM
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Elements of a communication system (block diagram only)
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bandwidth of signals (speech, TV and digital data)
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bandwidth of transmission medium
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propagation of electromagnetic waves in the atmosphere
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sky and space wave propagation
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qualitative idea about amplitude modulation and frequency modulation
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advantages of frequency modulation over amplitude modulation
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basic idea about internet
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mobile telephony and global positioning system (GPS)
BETA
