Which of the following statement is false for the properties of electromagnetic waves?

Options

A. both electric and magnetic field vectors attain the maxima minima at the same place and same time.
B. The energy in electromagnetic wave is divided equally between electric and magnetic vectors
C. both electric and magnetic field vectors are parallel to each other perpendicular to the direction of propagation of wave.
D. These waves do not require any material for propagation.

Answer

C

Explanation

Comparing the given equation
`E_(y)=2.5(N)/(C)cos[(2pixx10^(6)(rad)/(sec))t-(pixx10^(-2)(rad)/(sec))x]`
With the standard equation
`E_(y)=E_(0)cos(omegat-kx)`
we get
`omega=2pif=2pixx10^(6)`
`:. f=10^(6)Hz`
Moreover, we know that
`(2pi)/(lamda)=k=pixx10^(-2)m^(-1)implieslamda=200m`