The Speed of Yellow Sodium Light in a Certain Liquid

question 144

Multiple Choice

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.