KIDS QUIZ
SPACE EXPLORATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Telescopes use lenses to observe distant objects such as stars. Which term BEST describes what happens when lenses bend and concentrate light?
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reflecting
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polarizing
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diffracting
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refracting
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Explanation:
Detailed explanation-1: -Lenses create a type of image distortion known as chromatic aberration. This occurs because as light passes through a lens, different colors are bent through different angles (like in a prism) and brought to a focus at different points.
Detailed explanation-2: -Refraction. Refraction is when light waves change direction as they pass from one medium to another. Light travels slower in air than in a vacuum, and even slower in water. As light travels into a different medium, the change in speed bends the light.
Detailed explanation-3: -The major difference is that a refracting telescope uses convex lens to focus light. A reflecting telescope has a curved mirror in place of the objective lens.
There is 1 question to complete.