Physics 115 Homework 7 344=256 =1.34m λ λ 500/1 000 000 000 = 5x10^-7 m A refractor telescope uses a lens as its objective to form an image. A reflecting telescope, on the other hand, uses a single or combined curved mirrors to reflect light and form an image. The reflecting telescope is preferred because it does not cause chromatic aberration, which produces a blurry image. Telescope A has the greatest light gathering power. A also has the greatest
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