Flashcards
The critical angle and optical fibres
Cards in this deck (10)
- 1What is the law of reflection?The angle of incidence equals the angle of reflection
- 2How do we describe the image in a plane mirror?Virtual and upright
- 3When does total internal reflection occur?When the angle of incidence is beyond the critical angle
- 4How do we calculate the critical angle?Sin c = 1 / n
- 5Where do we use total internal reflection?Send pulses of light along optical fibres
- 6Which of these is untrue about ray diagrams?In ray diagrams, more arrow heads meaning a brighter light is false
- 7What is the term that describes the change in direction of light when it changes medium?Refraction
- 8Which of these is an advantage of using optical fibres?Light travels very quickly along optical fibres
- 9Where are optical fibres often used?By doctors in hospitals
- 10Which statement explains why refraction occurs?Light rays always travel in a straight line
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- GCSE Physics Flashcards on The critical angle and optical fibres, created by lily bevan on 12/03/2017.
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- lily bevan
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