47$. We can use Snell's law to find the angle of refraction. Snell's law is given by:
\[n_1 \sin(\theta_1) = n_2 \sin(\theta_2)\]
where $n_1$ and $n_2$ are the refractive indices of the two media, and $\theta_1$ and $\theta_2$ are the angles of incidence and
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