Question

What is the wavelength of an electromagnetic wave that travels at 3.0 x 10^8m/s and has a frequency of 5.43 x 10^-12Hz?

Answer 1

frequency f = velocity of light (c)/wavelength

therefore, wavelength =

velocity of light /frequency

= 3 x 10^8/ 5.43 x 10^-12

= 0.552 x 10^20.

HOPE IT HELPS