Question

Which coloured light has the largest wavelength?

• A. red
• B. violet
• C. blue
• D. green

Answer 1

The correct option is A

red

The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light. A typical human eye will respond to wavelengths from about 390 to 700 nm. Red coloured wavelength is present in the range of 700 nm, which is the highest wavelength.