1. In this experiment, if the angle of incidence is $40^\circ$, then the angle of reflection should be:
- A. $20^\circ$
- B. $40^\circ$
- C. $50^\circ$
- D. $80^\circ$
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Law of Reflection - Quiz
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In this experiment, if the angle of incidence is 40∘, then the angle of reflection should be:
Law of Reflection - Quiz - Quiz Questions
Test your mastery of the angle of incidence, angle of reflection, and the laws of reflection through the following exercises.
2. Regarding the 'Normal', which of the following statements is correct?
- A. The normal is a real existing red light ray
- B. The normal is always perpendicular to the mirror surface
- C. The normal is the extension line of the incident ray and the reflected ray
- D. The normal is not needed when measuring angles
3. When the incident ray gradually approaches the normal, the reflected ray will:
- A. Gradually move away from the normal
- B. Also gradually approach the normal
- C. Remain unchanged
- D. Disappear
4. If a light ray shoots perpendicularly towards the mirror surface, what are the angle of incidence and the angle of reflection respectively?
- A. $90^\circ$, $90^\circ$
- B. $0^\circ$, $0^\circ$
- C. $180^\circ$, $180^\circ$
- D. $0^\circ$, $90^\circ$
5. True or False: Cinema screens use rough white cloth because it can cause diffuse reflection of light, allowing audiences in all corners to see the image clearly.
- True
- False
6. If the angle between the incident ray and the mirror surface is $30^\circ$, then the angle of reflection is:
- A. $30^\circ$
- B. $60^\circ$
- C. $90^\circ$
- D. $120^\circ$
7. Bicycle tail lights are composed of many small plane mirrors perpendicular to each other. Their function is:
- A. Aesthetic decoration
- B. Diverge light rays
- C. Let light rays return along the original path
- D. Converge light rays
8. If the plane mirror rotates $10^\circ$ counterclockwise around the point of incidence, and the direction of the incident ray remains unchanged, the reflected ray rotates by:
- A. $10^\circ$
- B. $20^\circ$
- C. $0^\circ$
- D. $5^\circ$
9. We can see the book on the table from different directions. What phenomenon does this belong to?
- A. Specular reflection
- B. Diffuse reflection
- C. Refraction
- D. Total internal reflection
10. Regarding real images and virtual images, the image formed by a plane mirror is:
- A. Erect real image
- B. Inverted real image
- C. Erect virtual image
- D. Inverted virtual image