Multiple choice

The refractive index of glass with respect to water is 9/8. It implies that

  1. the speed of light respectively is 9 times and 8 times slower in glass and water with respect to vacuum

  2. the speed of light in glass is 9/8 times faster than that in water

  3. <font size="2" face="Arial">the speed of light in water is 9/8 times faster than that in glass</font>

  4. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The speed of light in water is 9/8 times faster than that in glass.