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What is intensityof electromagnetic wave...

What is intensityof electromagnetic wave? Give Its relation in terms of electric field E and magnetic field B

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To find the intensity of an electromagnetic wave and its relation in terms of the electric field (E) and magnetic field (B), we can follow these steps: ### Step-by-Step Solution: 1. **Definition of Intensity**: The intensity (I) of an electromagnetic wave is defined as the power (energy per unit time) passing through a unit area perpendicular to the direction of propagation. Mathematically, it is expressed as: \[ I = \frac{P}{A} ...
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Knowledge Check

  • In an electromagnetic wave, electric field E and magnetic field B are

    A
    Mutually perpendicular to each other
    B
    bisect to each other
    C
    both (A) and (B)
    D
    none of these
  • Relation between energy density of electric field and magnetic field in em wave.

    A
    `U_E = U_B`
    B
    `U_E gt U_B`
    C
    `U_E lt U_B`
    D
    `U_E != U_B`
  • We know that electric and magnetic field are associated with electromagnetic wave travelling in vaccum or some medium. Electric and magnetic fields

    A
    remain constant
    B
    are mutually perpendicular
    C
    are perpendicular to the direction of travel of light
    D
    have same average value
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