A2 Principles of optical fibres: Pearson BTEC National Applied Science (AAQ) Questions

Practise a2 principles of optical fibres with Pearson BTEC National Applied Science (AAQ) questions and mark schemes. Revise A2.1 Concept of refraction and total internal reflection (TIR), A2.1.1 use equations for refractive index 𝑛𝑛 = 𝐶𝐶 𝑉𝑉 = 𝑠𝑠𝑠𝑠𝑠𝑠 𝑖𝑖 𝑠𝑠𝑠𝑠𝑠𝑠 𝑟𝑟, A2.1.2 know that total internal reflection only occurs when the angle of incidence in the more optically dense medium is greater than the critical angle.

The topics below follow the course specification. Question availability depends on the papers uploaded; use the question bank filters to see current coverage.

What to revise

• A2.1 Concept of refraction and total internal reflection (TIR)
• A2.1.1 use equations for refractive index 𝑛𝑛 = 𝐶𝐶 𝑉𝑉 = 𝑠𝑠𝑠𝑠𝑠𝑠 𝑖𝑖 𝑠𝑠𝑠𝑠𝑠𝑠 𝑟𝑟
• A2.1.2 know that total internal reflection only occurs when the angle of incidence in the more optically dense medium is greater than the critical angle
• A2.1.3 calculate the critical angle at a glass–air interface given the refractive index of glass using: 𝑠𝑠𝑠𝑠𝑠𝑠 𝐶𝐶= 𝑛𝑛
• A2.1.4 know how cladding of optical fibres effects the critical angle in the fibre
• A2.2 Applications of optical fibres in engineering, communication, and medicine
• A2.3 Differences between analogue and digital signals

Use questions to check your understanding

Try a question before opening its mark scheme. Show each step in calculations and check the units, significant figures and scientific terms used in your answer. Compare your response with the marking points to see where you can improve.

In the question bank, filter by year and paper, open the original paper, or use split view to compare a question with its mark scheme. The Write tab lets you work on the question and save writing on this device. Add questions to a custom paper for a focused revision session.

Choose another subject or exam board