What is the order of colors in the visible spectrum

list the seven colors of the visible light spectrum in order of increasing energy from highest to lowest

ANSWER

The order of energy levels of the seven colors in descending order is required.

The required order is Violet, indigo, blue, green, yellow, orange and red.

The energy of a wave is given by

$E=hf$

where,

h = Planck’s constant = $6.626\times 10^{-34}\ \text{Js}$

f = Frequency of the wave

If the frequency is larger then the energy it has will be higher.

So, the decreasing order of the frequencies of the colors will give us the required order.

The frequency order is: Violet, indigo, blue, green, yellow, orange and red.