Question 38
Refraction of LightIn the diagram above, which of the angles θ1, θ2, θ3 and θ4 is the angle of deviation of a ray of light passing through the glass prism, XYZ?
- A.θ3
- B.θ2
- C.θ1
- D.θ4
Show the answer and explanation
Answer: A (θ3)
Explanation
The angle of deviation is between the incident ray extended forward (dashed line) and the emergent ray, which is θ3.