An electromagnetic wave has a wavelength of 15 m. It has a speed of 3 × 108 m/s.
Use the equation:
Wave speed=Frequency×Wavelength \text{Wave speed} = \text{Frequency} \times \text{Wavelength} Wave speed=Frequency×WavelengthCalculate the frequency of the wave.
2 MHz2\text{ MHz}2 MHz
20 MHz20\text{ MHz}20 MHz
200 MHz200\text{ MHz}200 MHz
2000 MHz2000\text{ MHz}2000 MHz