| Date | May 2018 | Marks available | 1 | Reference code | 18M.1.HL.TZ1.13 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 13 | Adapted from | N/A |
Question
A ray of light passes from the air into a long glass plate of refractive index n at an angle θ to the edge of the plate.
The ray is incident on the internal surface of the glass plate and the refracted ray travels along the external surface of the plate.
What change to n and what change to θ will cause the ray to travel entirely within the plate after incidence?
Markscheme
A
Examiners report
[N/A]
Syllabus sections
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