A plane e.m. wave travelling along the x-direction has a wavelength of 3mm. The variation in the electric field occurs in the y-direction with an amplitude `66Vm^-1`. The equation for the electric and magnetic fields as a function of x and t are respectively

Options

A. `E_(y)=33cos pixx10^(11)(t-x/c),B_(z)=1.1xx10^(-7)cos pixx10^(11)(t-x/c)`
B. `E_(y)=11cos 2 pi xx10^(11)(t-x/c),B_(y)=11xx10^(-7)cos 2pixx10^(11)(t-x/c)`
C. `E_(x)=33cospixx10^(11)(t-x/c),B_(x)=11xx10^(-7)cos pixx10^(11)(t-x/c)`
D. `E_(y)=66 cos 2pixx10^(11)(t-x/c),B_(z)=2.2xx10^(-7)cos 2pi xx 10^(11)(1-x/c)`

Answer

D