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Human Eye and Colourful World — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceHuman Eye and Colourful World2 Marks
Question
Which colour of light has.
  1. Minimum speed in glass?
  2. Minimum frequency?
✓

Answer

  1. Violet light has the shortest wavelength and is bent the most. Thus violet light travels more slowly through glass than does any other color and red light travels fastest.
  2. Red light has maximum wavelength and violet has minimum wavelength. As the frequency and wavelength of a wave are inversely proportional to each other so, red light has minimum frequency and violet light has maximum frequency.

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