JEE Main 9 Jan 2019 Shift 2 Solved Paper

In a communication system operating at wavelength 800 nm, only one percent of source frequency is available as signal bandwidth. The number of channels accomodated 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)