SSC CGL 2020 PYQ — Question 29

SSC CGL - 7th March 2020 Shift 1 • General Awareness • Q29

Which among the following has its refractive index closest to that of crown glass?

Show answer & explanation

Correct answer: D

Explanation

The correct answer is option 4 i.e. Canada balsam.

  • Refractive Index is equal to the ratio of the velocity of light in a vacuum to its velocity of the light in a specified medium we are comparing with.
  • Refractive Index of Crown Glass - 1.52-1.62.
  • Canada balsam has its refractive index closest to that of crown glass.