OCR A Level Physics B (Advancing Physics)
OCR A Level Physics B (Advancing Physics) Imaging and Signalling Exam Questions
Free OCR A Level Physics B (Advancing Physics) exam questions on Imaging and Signalling, with mark schemes. Covers lenses, image formation, digital images, signals, sampling and bandwidth.
Imaging and Signalling exam questions
These packs of real past exam questions cover the whole of Module 3: Physics in Action, including Imaging and Signalling. Work through every question on this sub-topic, then mark your answers against the mark scheme.
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A Level Physics Flashcards
Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Pick your exam board, then test yourself with the questions on this page.
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About OCR A Level Physics B (Advancing Physics) Imaging and Signalling
This sub-topic covers how images and signals are made and sent.
What you need to know
- Lenses Curvature, power and the lens equation.
- Digital images Pixels, resolution and image processing.
- Signals Analogue and digital, sampling rate and bits.
- Bandwidth Information rate and noise.
Common mistakes in Imaging and Signalling
- Sign errors in the lens equation.
- Confusing sampling rate and bit depth.
Try three Imaging and Signalling exam-style questions
1. Find the power of a lens with f = 0.25 m. (1 mark)
Show the mark scheme answer
4 D.
2. State how many levels 8 bits can represent. (1 mark)
Show the mark scheme answer
256.
3. Explain why the sampling rate must be at least twice the highest frequency. (1 mark)
Show the mark scheme answer
To reconstruct the signal without losing information.
Imaging and Signalling FAQs
What does this cover?
Lenses, digital images and signals.
Which practical links here?
Determining the focal length of a lens.
What is resolution in an image?
The smallest detail that can be distinguished.
Revise this topic with flashcards: A Level Physics Flashcards, with mark scheme answers for Anki and Quizlet.
