O-LevelPhysicsLight5054/11 · May/June 2020 · Q261 Mark
Light enters a glass block at an angle of incidence i and it produces an angle of refraction r in the glass. Several different values of i and r are measured, and a graph is drawn of sin i against sin r. Which graph is correct?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
AGraph with sin i increasing linearly with sin r (straight line through origin with positive slope)
BGraph with sin i decreasing linearly with sin r (straight line from 1.0 on sin i axis to 1.0 on sin r axis)
CGraph with sin i increasing, then constant, then increasing (horizontal line and then a straight line with positive slope)
DGraph with sin i decreasing, then constant, then decreasing (straight line with negative slope, then horizontal line)
✓ Correct answer
A: Graph with sin i increasing linearly with sin r (straight line through origin with positive slope)
Practise more questions on this topic
Oracle Prep sorts past-paper questions by topic, so you can drill Light and see which topics are most likely to come up next.
Sign up free →