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Human Eye and Colourful World — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceHuman Eye and Colourful World1 Mark
MCQ
Red light is used as danger signal because it is:
  • A
    Accepted as symbol
  • B
    Pleasing to the eye
  • C
    Sensitive to the eye
  • D
    Has high wavelength
✓

Answer

  1. Has high wavelength

Explanation:

Red light is used as danger signal because it is having high wavelength, less scattering, hence can travel larger distances.

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