Light, mirrors and lenses Quiz
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5 questions, one answer each
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1. How fast does light travel in a vacuum?
- A. 3 × 10⁸ m/s
- B. 340 m/s
- C. 3 × 10⁶ m/s
- D. 3 × 10⁵ m/s
2. Which lens is thicker in the middle and brings parallel rays together?
- A. A diverging lens
- B. A flat window pane
- C. A converging lens
- D. A pinhole
3. An object is placed closer to a converging lens than its focal length. What is the image like?
- A. Real, inverted and smaller
- B. Real, inverted and larger
- C. Virtual, upright and smaller
- D. Virtual, upright and magnified
4. Which lens corrects short sight?
- A. A converging lens
- B. A diverging lens
- C. A pinhole camera
- D. A plane mirror
5. The hole in a pinhole camera is made smaller. What happens to the image?
- A. Brighter and blurred
- B. Brighter and sharper
- C. Dimmer but sharper
- D. Larger and upright