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Intensity of electromagnetic waves I is ...

Intensity of electromagnetic waves I is given as I = ____________`E_(0)^(2)=` _____________`B_(0)^(2)`.

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`(1)/(2)in_(0)c E_(0)^(2),(1)/(2)(cB_(0)^(2))/(mu_(0))`
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Knowledge Check

  • Intensity of electromagnetic wave will be

    A
    `I=cmu_(0)B_(0)^(2)//2`
    B
    `I=c epsilon_(0)B_(0)^(2)//2`
    C
    `I=B_(0)^(2)//cmu_(0)`
    D
    `I=E_(0)^(2)//2cepsilon_(0)`

  • The magnetic field in a plane electromagnetic wave is given by B_(y) = 2 xx 10^(-7) sin (0.5 xx 10^(3)x + 1.5 xx 10^(11) t) . This electromagnetic wave is

    A
    a visible light
    B
    an infrared wave
    C
    a microwave
    D
    a radio wave

  • The electric vector vibration of an electromagnetic wave is given by E = (50NC^(-1)) sin omega(t-(x)/(c)) , The intensity of the wave is

    A
    `2.3 Wm^(-2)`
    B
    `4.3 Wm^(-2)`
    C
    `3.3 Wm^(-2)`
    D
    `1.8 Wm^(-2)`

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