The speed of yellow sodium light in a certain liquid is 1.92 × 10⁸ m/s. With respect to air, the index of refraction of this liquid for sodium light is approximately A) 1.92. B) 1.56. C) 1.23. D) 0.64. E) 1.33.

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Quizplus · Accepted Answer

The index of refraction is calculated by dividing the speed of light in a vacuum (approximately 3.00 × 10^8 m/s) by the speed of light in the medium. Thus, 3.00 × 10^8 m/s divided by 1.92 × 10^8 m/s equals approximately 1.56.

The Speed of Yellow Sodium Light in a Certain Liquid