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  9. Q520

RRB Group D (Level-1 posts) 2022 · Question 520 of 598

The refractive index of a given transparent medium is 1.5. What will be the speed of light in that medium?

  1. A2 × 108 m/secCorrect
  2. B4.5 × 108 m/sec
  3. C3 × 108 m/sec
  4. D0.5 × 108 m/sec

Answer: A. 2 × 108 m/sec

Explanation

Using the refractive index formula, v = nc , the speed of light in the medium is ​ calculated as 2 × 108 m/sec.

Source: RRB Group D 2022 Prev. Yr. Paper (22 Aug 2022) (Shift 1) - FreshersNow · reliable-secondary

← Q519View full paper (598 questions)Q521 →

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