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19 March, 17:39

In which of the following materials is the velocity of light greatest

a. Water

B. Fused quartz

C. Air

D. Crown

d. glass

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Answers (1)
  1. 19 March, 18:38
    0
    Air. The refractive index of air is approximately 1, and the velocity of light in a medium is given by

    v = c/n, where c is the speed of light in vacuum and n is the refractive index of the material. Out of the materials listed, air has the smallest refractive index hence velocity is highest.
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