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Problem

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question

A crude telescope is constructed of two spectacle lenses of focal lengths 100 cm and 20 cm respectively, a) Find its angular magnification. b) Find the height of the image formed by the objective of a building 200 ft high and one mile distant.

category

physics

options

  1. Angular magnification is 5, Image height is 2 inches
  2. Angular magnification is 5, Image height is 1.5 inches
  3. Angular magnification is 10, Image height is 1.5 inches
  4. Angular magnification is 3, Image height is 1 inch
  5. Angular magnification is 8, Image height is 2.5 inches
  6. Angular magnification is 2, Image height is 1.5 inches
  7. Angular magnification is 4, Image height is 3 inches
  8. Angular magnification is 10, Image height is 2 inches
  9. Angular magnification is 2, Image height is 2 inches
  10. Angular magnification is 5, Image height is 0.5 inches

src

stemez-Optics

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