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the human eye and the colourful world — Science STD 10 — Question

Gujarat BoardEnglish MediumSTD 10Sciencethe human eye and the colourful world1 Mark
Question
Why are ‘danger’ signal lights red?
✓

Answer

  • The red light gets scattered least by fog or smoke because of its longer wavelength relative to light of any other colour.
  • So, it can be seen even from a long distance.
  • Therefore it is used in signals showing danger.

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