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GCSE Physics > Chapter 5 - EM Waves - TIR > Flashcards

Chapter 5 - EM Waves - TIR Flashcards

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1
Q

What does TIR stand for?

A

Total Internal Reflection

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2
Q

What is total internal reflection?

A

When rays of light can’t refract any more from the normal so they reflect inside

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3
Q

What is the smallest angle TIR can happen at?

A

The critical angle

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4
Q

When is the only time that TIR works?

A

When going from a slower material to faster material (e.g. Perspex to air, water to air - how rainbows are created)

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5
Q

What are some examples of the use of TIR?

A

~ fibre optics

~ rainbows

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GCSE Physics (20 decks)

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