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Physics
Physics
Problem
Which relation between angular frequency
ω
ω
ω
and wave number
k
k
k
must hold for a plane electromagnetic wave propagating in vacuum? a)
ω
/
k
=
2
π
μ
0
ε
0
\omega/k = \dfrac{2\pi}{\sqrt{\mu_0\,\varepsilon_0}}
ω
/
k
=
μ
0
ε
0
2
π
b)
ω
/
k
=
1
2
μ
0
ε
0
\omega/k = \dfrac{1}{2\sqrt{\mu_0\,\varepsilon_0}}
ω
/
k
=
2
μ
0
ε
0
1
c)
ω
/
k
=
1
μ
0
ε
0
\omega/k = \dfrac{1}{\sqrt{\mu_0\,\varepsilon_0}}
ω
/
k
=
μ
0
ε
0
1
d)
ω
/
k
=
1
2
μ
0
ε
0
\omega/k = \dfrac{1}{\sqrt{2\,\mu_0\,\varepsilon_0}}
ω
/
k
=
2
μ
0
ε
0
1
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