The electric field associated with an electromagnetic wave in vacuum is given by E =40…
Physics · Class 12 · CBSE — Electromagnetic Waves
The electric field associated with an electromagnetic wave in vacuum is given by \(\vec{E}=40 \cos \left(kz-6 \times 10^{8} t\right) \hat{i}\), where E, z and t are in volt per meter, meter and second respectively. The value of wave vector k is
- 2 m–1
- 0.5 m–1
- 6 m–1
- 3 m–1
Answer
(A) 2 m –1
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