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Question

Both the lenses used in a telescope are
  1. convex
  2. concave
  3. None
  4. bipolar

A
convex
B
bipolar
C
concave
D
None
Solution
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Refracting telescopes use lenses to focus the light and reflecting telescopes use mirrors. Refracting telescopes work by using two lenses to focus the light and make it look like the object is closer to you. Both lenses are in a shape that's called convex.
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