First name: 2- A layer of glass, n = 1.50 floats on an unknown liquid. A ray of light originates in the glass and passes into the unknown liquid. The angle of incidence is 72.6, and the angle of refraction is 47.2. What is the index of refraction of the unknown liquid? (4 points) N, SINO = N Siw Nz Oz helor 11