 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2024/ii/paper-2/40d/b/iii/solution

Codex  0 Created 2026-09-24 Updated 2026-09-25

An SH-wave is polarized horizontally, normal to the vertical propagation plane:

B_{H} = B_{0} (0, 1, 0) .

It is also perpendicular to

k

and has

ω = c_{s} κ

. A horizontal boundary distinguishes these two otherwise degenerate S polarizations.

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