1.The maximum usable frequency in F-layer with original frequency of 50 MHz will be

2.The frequency of a wave propagating in D-region having refractive index is 0.5 is

3.For a FM wave the carrier is 160 MHz, modulating frequency is 15 kHz and frequency deviation of 1 MHz if modulating frequency is doubled, the band width will be

4.If total power content of an AM wave is 2.64 kW at 80% modulation then power content of each side band are

5.Total power content of an AM waves is 1500 watt. For a 100% modulation, power content of carrier should be