1. How does a reflecting telescope work?
- It has an objective lens in which the light is reflected.
- Using an objective lens and an eyepiece lens.
- The curved primary mirror focuses light rays from a distant object to an image in the same way as the objective lens in a refracting telescope. This image is then magnified by the eyepiece lens, also just like a refracting telescope.
- By making light travel through more than one material so that it is refracted.
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Other questions in this quiz
2. What is the geocentric model?
- The idea that the earth is the center of everything.
- A model by Nicholaus Copernicus
- The idea that the sun is the center of everything.
- The idea that planets moved in orbits
3. The amplitude of a wave is...
- The distance from a point on one wave to the same point on the next wave
- The maximum distance of a point on the wave from its rest position.
- How fast a wave travels.
- The number of waves passing a point each second.
4. How do you find a focal length?
- By using a mirror.
- By measuring the angle of refraction.
- By focusing a distant object on a piece of paper through the lens. The focal length is the distance between the centre of the lens and the image.
- By measuring the distance between the focal point and the image.
5. What type of waves are electromagnetic waves?