Physics
Grade-10
Easy
Question
The refractive index of glass is ____ the refractive index of water.
- Less than
- Greater than
- Equal to
- None of these
Hint:
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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