P7 Quiz: Light, telescopes and images
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?- Created by: Boma
- Created on: 23-06-13 22:02
Other questions in this quiz
2. What is a converging (convex) lens?
- A lens that causes parallel rays to converge to the focal point
- A lens that causes parallel rays to diverge from the focal point
- A lens that causes parallel rays to ignore the focal point
3. Power of a lens is worked out by...
- ...1/focal length of lens (metres)
- ...1/focal length of lens (kilometres)
- ...1/focal length of lens (centimetres)
4. What is refraction?
- The speed of a wave being affected by the medium it passes through
- The angle of a wave is affected by the medium it passes through
- The direction of a wave is affected by the medium it passes through
5. Power of a lens is measured in...
- ...volts
- ...dioptres
- ...power level
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