Question

i=60°
n1=1
n2=√3
--------------------------
alfa = ?

a)6°
b)60°
c)90°
d)120°

Vreau rezolvarea completa ! Multumesc

Answer 1

$n_1\sin i=n_2\sin r \\ 1\cdot \frac{\sqrt{3}}{2} = \sqrt{3}\sin r \\ \sin r= \frac{1}{2}\Rightarrow r=30^o$