Enery of one photon = h f
= (6.626 x 10-34) x (100x 106 )
= 6.626 x 10-26 J
energy density = I /c = 0.2 /(3x108) = 6.67x10-10 J/m3
photon density = energy density./ (energy of one photon)
= ( 6.67x10-10 J/m3) / (6.626 x 10-26 J) = 1.0 x 1016 /m3
1.0E16 photons/cubic meter
Question 10 5 pts A radio antenna emits EM waves at a frequency of 100 MHz...
Question 10 5 pts A radio antenna emits EM waves at a frequency of 100 MHz and intensity of 0.2 W/m2. What is the photon density in one cubic meter of the beam? 1.0E12 photons/cubic meter 1.0E 16 photons/cubic meter 1.0E20 photons/cubic meter O 1.4E31 photons/cubic meter O 6.1E32 photons/cubic meter
Question 10 5 pts A radio antenna emits EM waves at a frequency of 100 MHz and intensity of 0.2 W/m2. What is the photon density in one cubic meter of the beam? 1.0E 12 photons/cubic meter O 1.0E 16 photons/cubic meter O 1.0E20 photons/cubic meter O 1.4E31 photons/cubic meter O 6.1E32 photons/cubic meter
Question 10 5 pts A radio antenna emits EM waves at a frequency of 100 MHz and intensity of 0.2 W/m2. What is the photon density in one cubic meter of the beam? 1.0E 12 photons/cubic meter O 1.0E 16 photons/cubic meter O 1.0E20 photons/cubic meter O 1.4E31 photons/cubic meter O 6.1E32 photons/cubic meter
A radio antenna emits EM waves at a frequency of 100 MHz and intensity of 0.2 W/m? What is the photon density in one cubic meter of the beam? O 1.0E12 photons/cubic meter O 1.0E 16 photons/cubic meter O 1.0E20 photons/cubic meter O 1.4E31 photons/cubic meter O 6.1E32 photons/cubic meter
A radio antenna emits EM waves at a frequency of 100 MHz and intensity of 0.2 W/m2 What is the photon density in one cubic meter of the beam? 1.0E 12 photons/cubic meter 1.0E 16 photons/cubic meter 1.0E20 photons/cubic meter 1.4E31 photons/cubic meter 6.1E32 photons/cubic meter
A radio antenna emits EM waves at a frequency of 100 MHz and intensity of 0.2 W/m2 What is the photon density in one cubic meter of the beam? 1.0E 12 photons/cubic meter 1.0E 16 photons/cubic meter O 1.0E20 photons/cubic meter 1.4E31 photons/cubic meter O 6.1E32 photons/cubic meter
A radio antenna emits EM waves at a frequency of 100 MHz and intensity of 0.2 W/m2. What is the photon density in one cubic meter of the beam? 1.0E12 photons/cubic meter 1.0E16 photons/cubic meter 1.0E20 photons/cubic meter 1.4E31 photons/cubic meter 6.1E32 photons/cubic meter
A radio antenna emits EM waves at a frequency of 100 MHz and intensity of 0.2 W/m2. What is the photon density in one cubic meter of the beam? 1.0E12 photons/cubic meter 1.0E16 photons/cubic meter 1.0E20 photons/cubic meter 1.4E31 photons/cubic meter 6.1E32 photons/cubic meter
A radio antenna emits EM waves at a frequency of 100 MHz and intensity of 0.2 W/m2. What is the photon density in one cubic meter of the beam? 1.0E12 photons/cubic meter O 1.0E16 photons/cubic meter 1.0E20 photons/cubic meter O 1.4E31 photons/cubic meter 6.1E32 photons/cubic meter
A radio antenna emits EM waves at a frequency of 100 MHz and intensity of 0.2 W/m2. What is the photon density in one cubic meter of the beam? A. 1.0E12 photons/cubic meter B. 1.0E16 photons/cubic meter C. 1.0E20 photons/cubic meter D. 1.4E31 photons/cubic meter E. 6.1E32 photons/cubic meter