Total Internal Reflection
1 mark · EasyComplete the following sentence: A ray of light passing from glass into air will be totally internally reflected if the angle of incidence is _______ the critical angle.
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greater than
Also accept: more than
Common mistakes: less than
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Marking points
B1 · 1 mark · Correctly completes sentence with 'greater than'.
Worked solution
A ray of light passing from glass into air will be totally internally reflected if the angle of incidence is greater than the critical angle.