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Chapter 26: Vision and Optical Instruments

College Physics (Urone)
Pages: 933 - 958

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59 Questions for Chapter 26: Vision and Optical Instruments

  1. A pure red object on a black background seems to disappear when illuminated with pure green light. Explain why.

    Found on Page 955
  2. Unless otherwise stated, the lens-to-retina distance is 2.00 cm.

    Found on Page 956
  3. What is color constancy, and what are its limitations?

    Found on Page 955
  4. A severely myopic patient has a far point of 5.00 cm. By how many diopters should the power of his eye be reduced in laser vision correction to obtain normal distant vision for him?

    Found on Page 956
  5. There are different types of color blindness related to the malfunction of different types of cones. Why would it be particularly useful to study those rare individuals who are color blind only in one eye or who have a different type of color blindness in each eye?

    Found on Page 955
  6. A student’s eyes, while reading the blackboard, have a power of 51.0 D. How far is the board from his eyes?

    Found on Page 956
  7. Propose a way to study the function of the rods alone, given they can sense light about 1000 times dimmer than the cones.

    Found on Page 955
  8. The power of a physician’s eyes is 53.0 D while examining a patient. How far from her eyes is the feature being examined?

    Found on Page 956
  9. Geometric optics describes the interaction of light with macroscopic objects. Why, then, is it correct to use geometric optics to analyse a microscope’s image?

    Found on Page 955
  10. A young woman with normal distant vision has a 10.0% ability to accommodate (that is, increase) the power of her eyes. What is the closest object she can see clearly?

    Found on Page 956

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