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Answer : 4. "the speed of light in vacuum"
In optics, the refractive index of a substance is described by the formula n = c/v, where c is:
5Q:
In optics, the refractive index of a substance is described by the formula n = c/v, where c is:
- 1the speed of light in mediumfalse
- 2the centre of curvaturefalse
- 3the radius of the spherefalse
- 4the speed of light in vacuumtrue
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Answer : 4. "the speed of light in vacuum"
Explanation :
Refractive Index Formulan is the refractive index. c is the velocity of light in a vacuum ( 3 × 108 m/s) v is the velocity of light in a substance.