A flood light is covered with a fitter that transmits red light. The electric field of the emerging beam is represented by a sinusoidal plane wave E_(x) = 36 sin (1.20 xx 10^(7) z – 3.6 xx 10^(15) t) V // m The average intensity of beam in "watt" // "(metre)"^(2) will be :

A flood light is covered with a fitter that transmits red light. Th

1.	A flood light is covered with a fitter that transmits red light. The electric field of the emerging beam is represented by a sinusoidal plane wave E_(x) = 36 sin (1.20 xx 10^(7) z – 3.6 xx 10^(15) t) V // m The average intensity of beam in "watt" // "(metre)"^(2) will be :
Answer» 6.88 3.44 1.72 0.86 Solution :`I_("aver.")=(1)/(2)epsilon_(0)E_(0)^(2) xx C=1.719 W // m^(2)`

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A flood light is covered with a fitter that transmits red﻿ light. The electric field of the emerging beam is﻿ represented by a sinusoidal plane wave﻿ E_(x) = 36 sin (1.20 xx 10^(7) z – 3.6 xx 10^(15) t) V // m ﻿ The average intensity of beam in "watt" // "(metre)"^(2) will be :﻿

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A flood light is covered with a fitter that transmits red light. The electric field of the emerging beam is represented by a sinusoidal plane wave E_(x) = 36 sin (1.20 xx 10^(7) z – 3.6 xx 10^(15) t) V // m The average intensity of beam in "watt" // "(metre)"^(2) will be :