UPSC NDA I 2011 General Ability Paper

© examsiri.com

Question : 82 of 150

Marks: +1, -0

Light travels slower in glass than in air because:

refractive index of air is less than that of glass.
refractive index of air is greater than that of glass.
density of glass is greater than that of air.
density of glass is less than that of air.

Go to Question:

Prev Question

Next Question