The electric field component of a uniform plane electromagnetic

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The electric field component of a uniform plane electromagnetic wave propagating in the y-direction in a lossless medium will satisfy the equation—

1. ∂²E_y = με ∂²E_y
  ∂y² ∂t²
2. ∂²E_y = με ∂²E_y
  ∂y² ∂t²
3. ∂²E_x = με ∂²E_x
  ∂y² ∂t²
4. √E²x +E²z = √ μ
  √H²_x + H²_z ε
5. Both A and D

Correct Option: E

For uniform plane wave phase and magnitude remains constant in the plane normal to the propagation and changes with the direction of propagation. Hence alternative (A) and (D) as correct option.

∂²E_y	= με	∂²E_y
∂y²	= με	∂t²

∂²E_y	= με	∂²E_y
∂y²	= με	∂t²

∂²E_x	= με	∂²E_x
∂y²	= με	∂t²

√E²x +E²z	=	√	μ
√H²_x + H²_z			ε