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Results tagged with geometric-optics
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user 123046
The subfield of optics in which light propagation is approximated in terms of rays. It mainly includes reflection and refraction on surfaces.
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What determines the pattern, size and distance in a rainbow?
Rainbows are produced by sunlight entering a raindrop or other drop of water in the atmosphere. When it enters, the light is first refracted (bent) due to entering a denser medium. Some of the light e …
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1
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What is the need for angular magnification
Linear magnification is only useable in situations where lenses produce real images such as projection onto a screen. Optical instruments with eyepieces such as microscopes produce virtual images whos …
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1
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Why do light rays going to infinity form a real image?
Other textbooks do not say this. As you surmise, they operate under the assumption that parallel lines do not meet. None of the textbooks I've used for my Physics curriculum, including AP, have spoken …
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vote
Accepted
Find velocity of spot
You must mean the angular velocity of the spot since there is no indication of the distance to the wall for the answer to be in linear terms. So let's plan to give the answer in terms of the angular v …
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