Question

7.The speed of an electromagnetic wave is a constant, 3.0 x 108 m/s. The wavelength of a wave is 0.6 meters.What is the frequency?1.8 Hz5.0 Hz5.0 x 108 HzO 1.8 x 108 Hz

Answer 1

Given data

*The given speed of an electromagnetic wave is

`c=3*10^8\text{ m/s}`

*The given wavelength of the wave is

`\lambda=0.6\text{ m}`

The formula for the frequency of the wave is given as

`\begin{gathered} \lambda=(c)/(f) \\ f=(c)/(\lambda) \end{gathered}`

Substitute the values in the above expression as

`\begin{gathered} f=(3.0*10^8)/(0.6) \\ =5*10^8\text{ Hz} \end{gathered}`