← all questions · Physics · 9702 · Paper 4
Two media have specific acoustic impedances Z₁ and Z₂.
State the approximate value of the intensity reflection coefficient at the boundary between the two media when:
• Z₁ is almost equal to Z₂
• Z₁ is very different from Z₂.
9702/04/SP/22Cambridge International AS & A Level Physics 9702 · Specimen 2022 · Paper 4 · Question 10(b)(iii)
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Suggested time: 3 min