In an $EM$ wave propagating along $X-$ direction magnetic field oscillates at a frequency of $3 \times 10^{10}\, Hz$ along $Y-$ direction and has an amplitude of $10^{-7}\, T$. The expression for electric field will be
In an $EM$ wave propagating along $X-$ direction magnetic field oscillates at a frequency of $3 \times 10^{10}\, Hz$ along $Y-$ direction and has an amplitude of $10^{-7}\, T$. The expression for electric field will be
- A
$E_z = 30\, sin 2\pi\,(100x -3 \times 10^{10}\, t)\, V/m$
- B
$E_z = 300\, sin 2\pi\,(100x -3 \times 10^{10}\, t)\, V/m$
- C
$E_y = 30\, sin 2\pi\,(100x -3 \times 10^{10}\, t)\, V/m$
- D
$E_z = 300\, sin 2\pi\,(100x - 3 \times 10^{10}\, t)\, V/m$
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$(1)$ the wavelength $\lambda$ is $188.4\, m.$
$(2)$ the wave number $k$ is $0.33\,\, rad/m.$
$(3)$ the wave amplitude is $10\, V/m.$
$(4)$ the wave is propagating along $+x$ direction.
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$(1)$ the wavelength $\lambda$ is $188.4\, m.$
$(2)$ the wave number $k$ is $0.33\,\, rad/m.$
$(3)$ the wave amplitude is $10\, V/m.$
$(4)$ the wave is propagating along $+x$ direction.
Which one of the following pairs of statements is correct ?
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