Physicshard · Past Paper
A ray of light falls on a glass surface at an angle of 30 degrees with the surface. If it is reflected, what is the angle between incident and reflected ray?
A60 degrees
B120 degrees
C30 degrees
D90 degrees
✓ Correct Answer: B — 120 degrees
Angle with normal = 90-30=60. Angle of reflection = 60. Total angle = 60+60 = 120.
Share this question
More from Physics
- Relative density of a substance is 0.8. Will it float or sink in water?
- Which of the following is NOT a primary color of light?
- What is the focal length of a magnifying glass of power 20 D?
- A body will sink in a liquid if its density is:
- If a body moves in a circular path with constant speed, the work done by the force is: