As the coefficient of x is negative, it is moving along +ve x-axis and equating the equation Ey with yω⇒fk⇒λ=2.5cos[(2π×106)t−(π×10−2)x]=Acos(ωt−kx)=2π×106=2πω=106 Hz=π×10−2=k2π=π×10−22π=200 m
NEET UG 2009 — Physics Electromagnetism
The electric field part of an electromagnetic wave in a medium is represented by : Ex=0Ey=2.5CNcos[(2π×106mrad)t−(π×10−2srad)x] Ez=0. The wave is :
Held on 30 Apr 2009 · Verified 9 Jul 2026.
Moving along - x direction with frequency 106 Hz and wavelength 200 m
Moving along y direction with frequency 2π×106 Hz and wavelength 200 m
Moving along x direction with frequency 106 Hz and wavelength 100 m
Moving along x direction with frequency 106 Hz and wavelength 200 m
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