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JEE Main202324 Jan 2023Evening ShiftPhysicsElectromagnetic WavesActual

The electric field and magnetic field components of an electromagnetic wave going through vacuum is described by E x = E 0 sin k z - ω t B y = B 0 sin k z - ω t Then the correct relation between E 0 and B 0 is given by

Options

  1. AE 0 B 0 = ω k
  2. BE 0 = k B 0
  3. Ck E 0 = ω B 0
  4. Dω E 0 = k B 0

Correct answer

C. k E 0 = ω B 0

Step-by-step solution

As we know, electric field and magnetic field are related as E 0 = c B 0 , where, c is speed of light in vacuum Also   c = ω k ⇒ E 0 = ω k B 0 ⇒     E 0 k = ω B 0

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