Here's why:

* Frequency and Wavelength are Inversely Proportional: This means that as the frequency of a wave increases, its wavelength decreases, and vice versa.

* Higher Frequency = Shorter Wavelength: 2MHz (2,000,000 Hz) is a much higher frequency than 56Hz. Therefore, the wave with 2MHz frequency will have a much shorter wavelength.

Example: Think of a rope. If you shake it slowly, you'll create long waves. If you shake it quickly, you'll create short waves.