WBCS.LIVE practice question

'Red' is used as a danger signal because

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Blood is red.
  2. Red light is scattered least by the air molecules.
  3. Red colour is easily available.
  4. Red colour is soothing for the eye.

Correct answer and explanation

Correct answer: Red light is scattered least by the air molecules.