A

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Q. Red light is used for signals because it has

  • (A) Long wavelength
  • (B) High intensity
  • (C) High frequency
  • (D) Low refraction in the medium
  • Correct Answer - Option(A)
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  • Filed under category Physics
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Explanation by: Admin
Red light is used as danger signal because it is having high wavelength, less scattering ,hence can travel larger distances.

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