Respuesta
$n_1 \sin\theta_1 = n_2 \sin\theta_2$, where angles $\theta$ are measured relative to the normal line.
Explicación
When moving into an optically denser medium ($n_2 > n_1$), light bends toward the normal line ($\theta_2 < \theta_1$).
Inicio / Biblioteca / CSAT (Suneung) essentials: original practice / Flashcard sintético
State Snell's Law for light passing from medium 1 (refractive index $n_1$) into medium 2 (refractive index $n_2$).
Flashcard de estudio del mazo CSAT (Suneung) essentials: original practice.