A 1 kW radio transmitter operates at a frequency of 880 Hz

Last updated: 7/3/2023

A 1 kW radio transmitter operates at a frequency of 880 Hz How many photons per second does it emit 1 1 71 x 10 2 1 71 x 1033 3 6 02 x 1023 4 2 85 x 1026 A bulb of 40 W is producing a light of wavelength 620 nm with 80 of efficiency then the number of photons emitted by the bulb in 20 seconds are 1eV 1 6 x 10 19 J hc 12400 eV 1 2 x 10 8 2 1018 3 1021 4 2 x 10 1