Edexcel A-Level Physics AS 2.3.55 Transmission and Reflection At Boundaries Questions

Practise Edexcel IAL Physics 2.3.55 by explaining reflection from density changes, drawing boundary rays and relating partial transmission to refractive-index differences.

Exam points

explain strong ultrasound reflection from large density changes such as air in lungs
draw reflected and refracted ray paths at glass boundaries using normals and refractive index
explain partial reflection and transmission when refractive indices differ at a boundary

[Maximum number: 4]

Light is a transverse wave.

Two prisms, A and B, made from different types of glass are placed in contact as shown. An incident ray of light enters prism A.

Figure for Question Edexcel A-Level Physics AS 2.3.55 Transmission and Reflection At Boundaries Questions question 1 — Edexcel A-Level Physics AS

air

The refractive index of the glass in prism B is greater than the refractive index of the glass in prism A. When the ray of light reaches the boundary between the prisms, some light is reflected and some is refracted.

Complete the diagram to show the two paths taken by the reflected and refracted light until they have returned to the air.

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Edexcel A-Level Physics AS 2.3.55 Transmission and Reflection At Boundaries Questions question 1