1. list the colors of white light in order of decreasing wavelength
1. Violet: 400 - 420 nm.
2. Indigo: 420 - 440 nm.
3. Blue: 440 - 490 nm.
4. Green: 490 - 570 nm.
5. Yellow: 570 - 585 nm.
6. Orange: 585 - 620 nm.
7. Red: 620 - 780 nm
2.list the colors of white light in order of increasing energy
1 Red
2 Orange
3 Yellow
4 Green
5 Blue
6 Indigo
7Violet
