violet light
The higher the frequency the more towards the "bluer" end of the spectrum one moves. So violet is higher frequency than green which in turn is greater than red.
Every color has a different frequency. That's why it appears to our eyes as a different color.
The color of the rainbow with the highest frequency is violet.
Wavelength, or alternatively its frequency.
The color spectrum in order of increasing frequency (that also means decreasing band width) is red, orange, yellow, green, blue, violet. So red is the lowest visible frequency. Below that is called infrared and the color with a frequency greater than violet is called ultraviolet. Neither infrared nor ultraviolet is visible to the human eye although there may be other animals that are able to detect them.
Frequency determines color. Frequency is determined by the origin of the photon, i.e. emitted from an excited atom.
Energy. (if you mean E=h*ni) If you're referring to sound then the greater the frequency the smaller the wave length. (v=lambda*f)
The observed frequency can be greater than the frequency of the source due to the Doppler effect, where the relative motion between the source and observer causes a shift in the frequency of the wave. When the source is moving towards the observer, the observed frequency is higher, and when the source is moving away, the observed frequency is lower.
False. The wavelength of a wave is inversely proportional to its frequency. This means that higher frequency waves have shorter wavelengths, and lower frequency waves have longer wavelengths.
Frequency
No. Frequency is just a measure of "how often". It can be less than, equal to or greater than normal.
The frequency of the light is the color and the energy is E=hf or Planck's Constant times the color or frequency.