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Electromagnetic Waves — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsElectromagnetic Waves2 Marks
Question
A plane electromagnetic wave is propagating along Y -axis in vacuum. Write about the (i) ratio of magnitudes and (ii) directions of electric and magnetic fields.
✓

Answer

(i) $E / B =c$, where $E =|\overrightarrow{ E }| ; B =|\overrightarrow{ B }|$ and $c=$ speed of light.
(ii) Electric and magnetic field vector $\vec{E}$ and $\vec{B}$ will be respectively along the Z -axis and X -axis. They will be perpendicular to the direction of transmission of wave.

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