In figure , light refracts from material 1 into a thin layer of material 2, crosses that layer, and then is incident at the critical angle on the interface between materials 2 and 3. The angle θ is.

In figure , light refracts from material 1 into a thin layer of materi

1.	In figure , light refracts from material 1 into a thin layer of material 2, crosses that layer, and then is incident at the critical angle on the interface between materials 2 and 3. The angle θ is.
Answer» In figure , light refracts from material $1$ into a thin layer of material $2$ , crosses that layer, and then is incident at the critical angle on the interface between materials $2$ and $3$ . The angle $θ$ is.

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In figure , light refracts from material 1 into a thin layer of material 2, crosses that layer, and then is incident at the critical angle on the interface between materials 2 and 3. The angle θ is.

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