A plane electromagnetic wave , has freq...

A plane electromagnetic wave , has frequency of ` 2.0 xx 10^(10)` Hz and its energy density is `1.02 xx 10^(-8)J//m^(3)` in vacuum. The amplitude of the magnetic field of the wave is close to `((1)/( 4 pi epsi_0)=9xx 10^(9) (Nm^(2))/(C^(2)) and " speed of light "= 3 xx 10^(8) ms^(-1))` :

190nT

180 nT

160nT

150 nT

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The speed of light in vacuum is 3 xx 10^8 ms^(-1)

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