INSIGHT UPSC QUIZ

Science & Technology General Science
Q.

Consider the following statements about the ‘scattering of light’: 

1. Very fine particles scatter mainly blue light while particles of larger size scatter light of longer wavelengths. 

2. If the size of the scattering particles is large enough, then, the scattered light may even appear white. 

Which of the statements given above is/are correct?

Explanation:

ANSWER: (C) 

  • The earth’s atmosphere is a heterogeneous mixture of minute particles. These particles include smoke, tiny water droplets, suspended particles of dust and molecules of air. 
  • When a beam of light strikes such fine particles, the path of the beam becomes visible and this phenomenon is called the scattering of light.
  • The colour of the scattered light depends on the size of the scattering particles. 
  • Very fine particles scatter mainly blue light while particles of larger size scatter light of longer wavelengths. 
  • If the size of the scattering particles is large enough, then, the scattered light may even appear white.

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