Applications of Total Internal Reflection (Leaving Cert Physics): Quizzes
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12 questions from this quiz
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Practise the questions
12 questions from this quiz
What condition causes total internal reflection in these applications?
What condition causes total internal reflection in these applications?
Light hits at angle > critical angle
Where are cat's-eye reflectors commonly embedded?
Where are cat's-eye reflectors commonly embedded?
Road surfaces and lane markings
What is the retroreflective property of cat's-eye reflectors?
What is the retroreflective property of cat's-eye reflectors?
Light returns directly to its source
At which boundary does TIR occur in cat's-eye reflectors?
At which boundary does TIR occur in cat's-eye reflectors?
Glass and air
How are the three mirrors arranged in a corner cube reflector?
How are the three mirrors arranged in a corner cube reflector?
At right angles to each other
How does light emerge from a corner cube reflector?
How does light emerge from a corner cube reflector?
Parallel to its original direction
How does the cladding's refractive index compare to the core in optical fibres?
How does the cladding's refractive index compare to the core in optical fibres?
Lower than the core
What angle condition is needed for light to stay in the optical fibre core?
What angle condition is needed for light to stay in the optical fibre core?
Greater than the critical angle
What happens when an optical fibre is bent too sharply?
What happens when an optical fibre is bent too sharply?
Light escapes from the fibre
What advantage do optical fibres have over copper wires in telecommunications?
What advantage do optical fibres have over copper wires in telecommunications?
Much smaller energy losses
How does an endoscope use two bundles of optical fibres?
How does an endoscope use two bundles of optical fibres?
One illuminates, one carries light back
What is a key benefit of laparoscopic surgery using optical fibres?
What is a key benefit of laparoscopic surgery using optical fibres?
Faster recovery for patients