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Human Eye and Colourful World — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceHuman Eye and Colourful World1 Mark
MCQ
Name the colour of white light which is deviated the least, on passing through a prism :
  • ✓
    Red
  • B
    Violet
  • C
    Blue
  • D
    Orange
✓

Answer

Correct option: A.
Red
Red light has the minimum refractive index and maximum speed when travelling through a medium since it has the longest wavelength.
Thus, it bends least upon incidence and has minimum deviation for the incident ray.

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