Consider a wave rpresented by `y= a cos^(2) (omega t-kx)` where symbols have their usual meanings. This wave has

Options

A. an amplitude `a`, frequency `omega`, and wavelength `lambda`.
B. an amplitude `a`, frequency `2omega`, and wabvelength `2lambda`.
C. an amplitude `a//2` frequency `2omega` and wavelength `lambda//2`.
D. am amplitude `a//2` frequency `2omega`, and wavelength `lambda`.

Answer

c

Explanation

`y=a[(1+cos(2omegat-2kx))/(2)]`
`y=(a)/(2)+(a)/(2)cos(2omegat-2kx)`