Question

please do help me out with this one... ​

Answer 1

Answer:

C

Explanation:

n1 × sin theta 1 = n2 × sin theta 2 [Snell's Law]

n2/n1 = sin theta 1/sin theta 2

n21 = sin 60° /sin 45°

n21 = √3/2 / 1/√2

n21 = √3/√2

n21 = 1.7 /1.4

n21 = 1.22

HOPE IT HELPS !!!!