If the Speed of Light Through an Unknown Liquid Is

Multiple Choice

If the speed of light through an unknown liquid is measured at 1.78 × 10⁸ m/s,what is the index of refraction of this liquid? (c = 3.00 × 10⁸ m/s)

A) 0.593
B) 1.69
C) 2.84
D) 1.30
E) 1.59