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Physics / Physics with MasteringPhysics 4 / Chapter 27 / Problem 74P

Physics with MasteringPhysics | 4th Edition | ISBN: 9780321541635 | Authors: James S. Walker

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QUESTION:

Problem 74P

Roughing It with Science A professor shipwrecked on Hooligan’s Island decides to build a telescope from his eyeglasses and some coconut shells. Fortunately, the professor’s eyes require different prescriptions, with the left lens having a power of +5.0 diopters and the right lens having a power of +2.0 diopters. (a) Which lens should he use as the objective? (b) What is the angular magnification of the professor’s telescope?

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QUESTION:

Problem 74P

Roughing It with Science A professor shipwrecked on Hooligan’s Island decides to build a telescope from his eyeglasses and some coconut shells. Fortunately, the professor’s eyes require different prescriptions, with the left lens having a power of +5.0 diopters and the right lens having a power of +2.0 diopters. (a) Which lens should he use as the objective? (b) What is the angular magnification of the professor’s telescope?

ANSWER:

Step 1 of 3

(a)

Here we need to select the lens that can be used as an objective lens in the given telescope. The left lens has refractive power $R.{P}_{eye}=5\ diopters$ and the right lens has the refractive power $R.{P}_{obj}=2\ diopters$ .

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