everyday science MCQ #3463

Which one of the following colours has the longest wavelength?

everyday science MCQ #3463

  1. Question 1

    Q1. Which one of the following colours has the longest wavelength?

    • A) Yellow
    • B) Blue
    • C) Red
    • D) Green

    Answer: Red

    Explanation: In the visible spectrum, red light has the longest wavelength (approximately 620–750 nm), while violet has the shortest.