______ reflections occur with greater impedance differences.

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Multiple Choice

______ reflections occur with greater impedance differences.

Explanation:
The key idea is that reflections at a boundary grow as the impedance difference between the two media becomes larger. When a wave moves from one medium to another, part of it reflects back while part transmits forward. The strength of that reflected wave is governed by how different the impedances are: bigger mismatch means more energy is reflected. In simple terms, if the impedances are identical, there’s no reflection; if they differ slightly, you get a small reflection; if they differ a lot, you get a strong reflection. Therefore, reflections occur with greater impedance differences.

The key idea is that reflections at a boundary grow as the impedance difference between the two media becomes larger. When a wave moves from one medium to another, part of it reflects back while part transmits forward. The strength of that reflected wave is governed by how different the impedances are: bigger mismatch means more energy is reflected. In simple terms, if the impedances are identical, there’s no reflection; if they differ slightly, you get a small reflection; if they differ a lot, you get a strong reflection. Therefore, reflections occur with greater impedance differences.

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