Alight beam in air strikes the surface of water at an angle of 26° with the normal. when it enters the water it bends toward the normal, making an angle of 19° with it. the velocity of light in air is approximately 300,000 km/s. what is the approximate velocity of light in water?
sin i/ sin r= vi/vr
a. 77,197 km/s
b. 222,803 km/s
c. 278,437 km/s
d. 340,625 km/s

medium 1 is air, and its index of refraction rounds to 1.00. if the angle of incidence is 61° and the angle of refraction is 45°, what is the index of refraction of medium 2?
sin i/sin r = nr/ni
a. 0.89
b. 1.00
c. 1.24
d. 1.35