Question

2. The frequencies of radio waves range from 3x10^5Hz to 3x10^7Hz. What is the

range of wavelengths of these waves? Use 3x10^8m/s as the speed of electromagnetic
waves.

Answer 1

10 m to 1000 m

Step-by-step explanation:

Using,

V = λf........... Equation 1

Where V = speed of electromagnetic wave, λ = wavelength, f = frequency

λ = V/f.......... Equation 1

Given: v = 3×10⁸ m/s, f = 3×10⁵ Hz to 3×10⁷ Hz

From the question,

The lowest wavelength is

λ' = 3×10⁸/3×10⁷

λ' = 10 m

While the highest wavelength is

λ = 3×10⁸/3×10⁵

λ = 1000 m

Hence the range of wavelenths of the eave is 10 m to 1000 m