The magnetic field of an electromagnetic wave is represented as B _ x = B _ 0 ( ky - t )…
Physics · Class 12 · CBSE — Electromagnetic Waves
The magnetic field of an electromagnetic wave is represented as \({B}_{{x}}={B}_{0} \sin ({ky}-\omega {t})\) . It means that the wave propagation direction and wave vector k are respectively:
- +z axis, \(\frac{2 \pi}{v}\)
- -z axis, \(\frac{2 \pi}{{~T}}\)
- +y axis, \(\frac{2 \pi}{\lambda}\)
- -y axis, \(\frac{\lambda}{2 \pi}\)
Answer
(C) +y axis, 2
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