2.3.55 - Transmission and reflection at boundaries

Understand that waves can be transmitted and reflected at an interface between media.

Use - transmission and reflection at boundaries to connect the rule to the data and decision in the question.

This matters because - transmission and reflection at boundaries determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply - transmission and reflection at boundaries to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: - Transmission and reflection at boundaries is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.