Here's why:

* The Relationship: Frequency and wavelength are inversely proportional. This means that as one increases, the other decreases proportionally.

* The Equation: This relationship is described by the following equation:

* c = fλ

* where:

* c = the speed of light (a constant)

* f = frequency

* λ = wavelength

* The Logic: If you increase the frequency (f) and keep the speed of light (c) constant, the wavelength (λ) must decrease to maintain the equality.

Example:

* If the original frequency is 1 Hz and the wavelength is 1 meter, then the speed of light is 1 meter per second.

* If the frequency is tripled to 3 Hz, the wavelength must decrease to 1/3 meter (or 0.33 meters) to keep the speed of light constant at 1 meter per second.