Question

Green light has a wavelength of

• A. 400 – 450 nm
• B. 500 − 580 nm
• C. 660 – 720 nm
• D. 720 − 800 nm

Answer 1

The correct option is B 500 − 580 nm

The visible spectrum wavelength is ususally between 400 to 700 nm.
Violet light has a wavelength of 400 – 450 nm.
Where as Green light has a wavelength of 500 – 580 nm.
Red light has a wavelength of 660 – 720 nm.
Wavelengths longer than 720 nm are part of the Infra-red spectrum.