Question 39
Refraction of LightThe figure above shows a plot of angles of deviation through a glass prism when light is incident at θ degrees on the prism. The incident angle that produces the minimum deviation is
- A.25°.
- B.18°.
- C.35°.
- D.20°.
Show the answer and explanation
Answer: A (25°.)
Explanation
Minimum deviation is the lowest point of the curve, which is at an incident angle of about 25°.