Non-ionising Imaging (AQA A-Level Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What physical principle allows optical fibres to transmit light efficiently over long distances?
What physical principle allows optical fibres to transmit light efficiently over long distances?
Total internal reflection
For TIR to occur in an optical fibre, what must be true about the angle of incidence?
For TIR to occur in an optical fibre, what must be true about the angle of incidence?
It must exceed the critical angle
How does the refractive index of the core compare to the cladding for TIR to occur?
How does the refractive index of the core compare to the cladding for TIR to occur?
Core must have higher refractive index
What is one function of the cladding on an optical fibre?
What is one function of the cladding on an optical fibre?
Protects core from physical damage
What defines a coherent fibre bundle?
What defines a coherent fibre bundle?
Fibre positions kept constant
What is the primary use of an incoherent fibre bundle?
What is the primary use of an incoherent fibre bundle?
Illumination in hard-to-reach areas
What factor improves the resolution in fibre bundles?
What factor improves the resolution in fibre bundles?
Smaller diameter of individual fibres
Which type of fibre bundle is used for capturing images in an endoscope?
Which type of fibre bundle is used for capturing images in an endoscope?
Coherent bundle
What is the purpose of the channel in some endoscopes?
What is the purpose of the channel in some endoscopes?
Creates space by inflating the area
What is one advantage of key-hole surgery using endoscopes?
What is one advantage of key-hole surgery using endoscopes?
Reduces recovery time