* Wavelength is halved: The relationship between frequency (f) and wavelength (λ) is given by the equation:
```
c = fλ
```
where 'c' is the speed of light, which is constant. So, if the frequency is doubled, the wavelength must be halved to maintain the same speed.
* Energy is doubled: The energy (E) of a photon, the particle that carries electromagnetic radiation, is directly proportional to its frequency:
```
E = hf
```
where 'h' is Planck's constant. Therefore, doubling the frequency also doubles the energy of each photon.
* Color changes (for visible light): For visible light, different frequencies correspond to different colors. Doubling the frequency of a red light wave would shift it towards the orange or yellow region of the visible spectrum.
Here's a summary of the changes:
Frequency doubled:
* Wavelength halved
* Energy doubled
* Color shifts towards higher energy colors (for visible light)
It's important to note that the speed of light remains constant regardless of the frequency change.