In a communication system operating at wavelength 800 nm
PHYSICS · Single correct · A Level · Physics · Electronics · Electronics
Problem
In a communication system operating at wavelength 800 nm, only one percent of source frequency is available as signal bandwidth. The number of channels accommodated for transmitting TV signals of band width 6 MHz are (Take velocity of light c=3×108 m/s, h=6.6×10−34 J s)
(1) 3.75×106
(2) 3.86×106
(3) 6.25×105
(4) 4.87×105