Step-by-step explanation:
The wavelength of the different colours in the visible light is given as;
Orange - 590-620 nm
Green - 495-570 nm
Violet - 380-450 nm
1) Shortest Wavelength
This is Violet - 380-450 nm
2) Second Longest Wavelength
This is Green - 495-570 nm
3) Longest Wavelength
Orange - 590-620 nm