Answer to Question #58887 in Other Physics for abhinav
i) The best mode for transmitting optical signal is Line-of-Sight communication.
ii) A simple sine wave signal does not carry any information.
iii) Input impedance for an open ended transmission line of λ/2 length is zero.
iv) Amplitude distortion in AM gives rise to unwanted frequency components.
v) Amplitude shift keying is modulation of digital carrier by analog signal.
vi) Mobile telephony uses space division multiplexing.
vii) Gunn devices can be built using indirect band gap semiconductors.
viii) In television, vertical scanning frequency is higher than horizontal scanning frequency.
ix) Assembly language programmes are portable, while machine language programmes are not.
x) Router can provide inter-conversion of protocols among connections
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