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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2009
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The electric field part of an electromagnetic wave in a medium is represented by :$E_x=0$ <br> $E_y=2.5\frac{N}{C}cos[(2\pi\times10^6\frac{rad}{m})t-(\pi\times10^{-2}\frac{rad}{s})x]$ <br>$E_z=0$. The wave is :


( A ) Moving along x direction with frequency $10^6$ Hz and wavelength 200m
( B ) Moving along y direction with frequency $2\pi \times10^6$ Hz and wavelength 200m
( C ) Moving along –x direction with frequency$10^{6}$ Hz and wavelength 200m
( D ) Moving along x direction with frequency $10^ {6}$ Hz and wavelength 100m

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