search
arrow-left Previous
Next arrow-right
Q: Which of the following substance is less dense visually?
  • A. air
  • B. turpentine
  • C. benzene
  • D. water
Correct Answer: Option A - The speed of light was first calculated by Roemer. The speed of light depends on the refractive index ( )of the medium, the higher the refractive index of the medium, the lower the speed of light in it and it is the more dense medium. From the given option, the medium of air is less dense because the refractive index of air is the lowest than the refractive index of other substances.
A. The speed of light was first calculated by Roemer. The speed of light depends on the refractive index ( )of the medium, the higher the refractive index of the medium, the lower the speed of light in it and it is the more dense medium. From the given option, the medium of air is less dense because the refractive index of air is the lowest than the refractive index of other substances.

Explanations:

The speed of light was first calculated by Roemer. The speed of light depends on the refractive index ( )of the medium, the higher the refractive index of the medium, the lower the speed of light in it and it is the more dense medium. From the given option, the medium of air is less dense because the refractive index of air is the lowest than the refractive index of other substances.