1. Who was the first astronomer to use an optical telescope? Tycho Brahe Galileo Galilei Issac Newton
2. The primary mirror or lens that gathers and focuses light is called, The objective The eye The Collector
3. Catadioptic telescopes use, Lenses Mirrors Both lenses and mirrors
4. The eye piece of the Galilean Telescope uses, A lens system A convex lens A concave lens
5. What was Johannes Kepler's contribution to optical telescopes? The correction lens The astronomical telescope The primary mirror replacing the lens
6. Who was the first to suggest a practical design for a reflecting telescope, in the publication Optica Promota? Hans Lippershey Issac Newton James Gregory
7. Which of these improves the angular resolution of a telescope? Increasing the magnification Increasing the diameter of primary mirror or lens Increasing the focal length of the eye piece
8. What is the f-number of a telescope? The ratio between focal length and aperture of primary mirror/lens The maximum magnification of a telescope The identification number of the telescope manufacturer
9. The light gathering power of an optical telescope is related to, The focal lengh of the primary mirror or lens The square of the aperture The ratio of the focal lengths
10. Adaptive optics in optical telesocpes is used, To track moving objects with a telescope To reduce atmospheric distortion of light To reduce the cost of building a telescope
