Physics
Grade-10
Easy

Question

The refractive index of glass is ____ the refractive index of water.

  1. Less than
  2. Greater than 
  3. Equal to 
  4. None of these 

hintHint:

The refractive index of a medium is directly proportional to its density. 

The correct answer is: Greater than 


    The refractive index of glass is greater than the refractive index of water.
    • The refractive index in a denser medium is more than that of a rarer medium.
    • Glass is a denser medium that has more density than the rarer medium- water.
    • Thus, the refractive index in glass is more than in water as water has lesser density.   

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