You are taking an eye exam. You stand 5 m from a board that has letters...
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You are taking an eye exam. You stand 5 m from a board that has letters printed on it. The separation between two of the letters on the board is 1 cm. Assume that the light in the room has a wavelength of 600 nm. a. If your pupil has a diameter of 7.5 mm, can you resolve the two letters, or do they blur together? (1 point) b. What is the maximum distance at which you would be able to resolve the letters? (1 point) Question 12 (2 points) The lens of a telescope has a diameter of 25 cm. You are using it to look at two stars that are 2 1017 m away from you and 6 109 m from each other. You are measuring light with a wavelength of 700 nm. As the light goes through the lens, it diffracts. a. Is it possible, using this telescope, to see the two stars as separate stars? (1 point) b. What is the minimum possible lens diameter you would need in order to resolve these two stars? (1 point) Question 13 (2 points) You are looking up at the Moon, which is 3.8 108 m away from Earth. It is nighttime, and your pupils have opened to a diameter of 8 mm. Assume that the light has a wavelength of 600 nm. a. If you're looking at two objects on the Moon's surface, how far apart must they be for you to be able to resolve them? Assume that the light from the Moon has a wavelength of 600 nm. (1 point) b. When you're in the dark for a long time, your pupils open wider. Why would letting your eyes adjust to the dark help you resolve objects on the Moon? (1 point) You are taking an eye exam. You stand 5 m from a board that has letters printed on it. The separation between two of the letters on the board is 1 cm. Assume that the light in the room has a wavelength of 600 nm. a. If your pupil has a diameter of 7.5 mm, can you resolve the two letters, or do they blur together? (1 point) b. What is the maximum distance at which you would be able to resolve the letters? (1 point) Question 12 (2 points) The lens of a telescope has a diameter of 25 cm. You are using it to look at two stars that are 2 1017 m away from you and 6 109 m from each other. You are measuring light with a wavelength of 700 nm. As the light goes through the lens, it diffracts. a. Is it possible, using this telescope, to see the two stars as separate stars? (1 point) b. What is the minimum possible lens diameter you would need in order to resolve these two stars? (1 point) Question 13 (2 points) You are looking up at the Moon, which is 3.8 108 m away from Earth. It is nighttime, and your pupils have opened to a diameter of 8 mm. Assume that the light has a wavelength of 600 nm. a. If you're looking at two objects on the Moon's surface, how far apart must they be for you to be able to resolve them? Assume that the light from the Moon has a wavelength of 600 nm. (1 point) b. When you're in the dark for a long time, your pupils open wider. Why would letting your eyes adjust to the dark help you resolve objects on the Moon? (1 point)
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Related Book For
Physics
ISBN: 978-0077339685
2nd edition
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
Posted Date:
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