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Physics Review Question Unit: Optics Year: 1994 Question#: 94 Question: What causes chromatic abberation in crown glass lens? (1 ) Each wavelength of light reflects from the surface of the lens. (2 ) Each wavelength of light is refracted a different amount by the lens. (3 ) White light waves interfere inside the lens. (4 ) White light waves diffract around the edge of the lens. What is this question really asking? Explanation by: Joshua [ Return to question menu ] Answer 1 Each wavelength of light reflects from the surface of the lens. INCORRECT It does not reflect, it refracts. return to top Answer 2 Each wavelength of light is refracted a different amount by the lens. CORRECT That's what happens. return to top Answer 3 White light waves interfere inside the lens. INCORRECT Interference is minor effect. return to top Answer 4 White light waves diffract around the edge of the lens. INCORRECT Diffraction has a minor effect in lenses. return to top What's this question really asking? What causes chromatic abberation in a crown glass lens? return to top |
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