Light travels slower in glass than in air because

Options :
  1. refractive index of air is less than that of glass
  2. refractive index of air is greater than that of glass
  3. density of glass is greater than that of air
  4. density of glass is less than that of air

Answer and Explanation :-

Answer: Option 1


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So it is always preferable to discuss the matter of veganism in a non-judgemental way. Remember that to most people, eating flesh or dairy and using animal products such as leather, wool, and silk, is as normal as breathing air or drinking water. A person who consumes dairy or uses animal products is not necessarily or usually what a recent and unpopular American president labelled an "evil doer.
-Gary L. Francione