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Light travels slower in glass than in air because:

Options

  1. Arefractive index of air is less than that of glass.
  2. Brefractive index of air is greater than that of glass.
  3. Cdensity of glass is greater than that of air.
  4. Ddensity of glass is less than that of air.

Correct answer

A. refractive index of air is less than that of glass.

Step-by-step solution

The correct answer is option (A).

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