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RRB Junior Engineer / DMS / CMA 2019 · Question 1836 of 3719

How is the refractive index of a material related to the speed of light in air?

  1. ARefractive index $$=$$ Speed of light in air $$+$$ Speed of light in material
  2. BRefractive index $$=$$ Speed of light in air $$/$$ Speed of light in materialCorrect
  3. CRefractive index $$=$$ Speed of light in air $$\times$$ Speed of light in material
  4. DRefractive index $$=$$ Speed of light in material $$/$$ Speed of light in air

Answer: B. Refractive index $$=$$ Speed of light in air $$/$$ Speed of light in material

Official answer key verified. Detailed explanation coming soon.

Source: RRB JE 2019 CBT-1 (27-May-2019 Shift 1) — cracku.in solved paper with answer key · reliable-secondary

← Q1835View full paper (3719 questions)Q1837 →

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