<prompt> Wavelength of light is400-700 nm500-800 nm700-900 nm300-600 nm  <response>: Ans: a 400-700nm Ref: Vasudevan 4th ed p. 479Wavelength of visible light is 400-700nm.Violet- 420 nmBlue- 470 nmGreen- 520 nmYellow- 580 nmRed- 680 nm 