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# Uses Of Concave And Convex Mirrors Pdf

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We only have to look as far as the nearest bathroom to find an example of an image formed by a mirror.

The concave mirror is a converging mirror so that it is used for many purposes, It is used as a torch to reflect the light , It is used in the aircraft landing at the airports to guide the aeroplanes, It is used in shaving to get an enlarged and erect image of the face. The concave mirror is used in front lights of cars to reflect the light , It is used in marine lighthouses that are found at the marine ports and at the airports to guide the ships and it is used in the solar ovens. The concave mirror i s used in the solar ovens and the solar furnaces to collect a large amount of solar energy in the focus of the mirror for cooking food, heating water, recharging power backups, or melting metals respectively.

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The learning objectives in this section help your students master the following standards:. In addition, the High School Physics Laboratory Manual addresses content in this section in the lab titled: Mirrors and Lenses, as well as the following standards:. The lines must be straight lines for the number to have meaning. In this chapter, we are focused on the first three ideas. Trigonometric functions are ratios of the lengths of two sides of a right triangle. There are six possible ratios; therefore, there are six such functions. There are three ways, as shown in Figure

Predating even crude lenses, mirrors are perhaps the oldest optical element utilized by man to harness the power of light. Prehistoric cave dwellers were no doubt mesmerized by their reflections in undisturbed ponds and other bodies of water, but the earliest man-made mirrors were not discovered until Egyptian pyramidal artifacts dating back to around BC were examined. Mirrors made during the Greco-Roman period and the Middle Ages consisted of highly polished metals, such as bronze, tin, or silver, fashioned into slightly convex disks, which served mankind for over a millennium. It was not until the late Twelfth or early Thirteenth Centuries that the use of glass with a metallic backing was developed to produce looking glasses , but refinement of this technique took an additional several hundred years. By the Sixteenth Century, Venetian craftsmen were fabricating handsome mirrors fashioned from a sheet of flat glass coated with a thin layer of mercury-tin amalgam see Figure 1 for a Gothic version. Over the next few hundred years, German and French specialists developed mirror-making into a fine art, and exquisitely crafted mirrors decorated the halls, dining, living, and bedrooms of the European aristocracy. Finally, in the mids, German organic chemist Justus von Liebig devised a method for depositing metallic silver onto a pre-etched glass surface by chemically reducing an aqueous solution of silver nitrate.

## Shedding Light on Curved Mirrors

In Shedding Light on Curved Mirrors 30 minutes , presenter Spiro Liacos uses clear, real-life examples and superb animations to explain how and why convex and concave mirrors are so useful. Following a brief recap on reflection in flat mirrors, Spiro shows how convex mirrors are used in a wide variety of safety applications. He then describes how concave mirrors produce images, and explains the uses of concave reflectors in things like headlights, satellite dishes and solar cookers. The program comes with a set of excellent practical activities and question sheets which keep students engaged in their learning for multiple lessons. The preview video below contains a two-minute trailer followed by a five-minute excerpt. The two Parabolas worksheets give students some practice in some of the Maths involved.

Light can reflect more than once. How do you use light to see? Mirrors. • When no light is If the surface of a mirror is curved inward, it is called a concave​.

## Uses of Concave and Convex Mirrors

Last updated at April 23, by Teachoo. Diminished - Hence, the image produced is much smaller than the actual size of the object. This helps in providing a wider field of view.

#### Ray Diagram for Convex and Concave Mirror

Optical lenses are polished glass or plastic substrates that are shaped with one or more curved surfaces that transmit light. Optical lenses may be used either uncoated or with an antireflective coating depending on their intended application. All optical lenses have a focal length which is the distance from the lens to the focal point along the optical axis of the lens. Three factors determine the focal length of a lens; the radius of curvature of the lens, the refractive index of the substrate from which the lens is made, and the medium in which the lens resides. Lenses that are highly curved and made from material with a high refractive index, and placed in a medium with a large difference in the refractive index will have a shorter focal length and will therefore be more powerful.

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Беккер молча ждал выстрела, который должен оборвать его жизнь. ГЛАВА 89 Лучи утреннего солнца едва успели коснуться крыш Севильи и лабиринта узких улочек под. Колокола на башне Гиральда созывали людей на утреннюю мессу. Этой минуты ждали все жители города.

Теперь они выстроились в восемь рядов по восемь в каждом.

Он прав. Я читала об. В бомбах было разное топливо. В одной урановое, в другой плутониевое.

Он обладал сверхъестественной способностью одерживать верх над всеми, кто бросал ему вызов. Шесть месяцев назад, когда Фонд электронных границ обнародовал информацию о том, что подводная лодка АНБ прослушивает подводные телефонные кабели, Стратмор организовал утечку информации о том, что эта подводная лодка на самом деле занимается незаконным сбросом токсичных отходов. ФЭГ и экологи так и не смогли установить, какая из двух версий соответствует истине, и средства массовой информации в конце концов устали от всей этой истории и перешли к другим темам. Каждый шаг Стратмора был рассчитан самым тщательным образом.

Если им что нужно, то обязательно еще вчера.

Беккер убрал блокнот и ручку. Игра в шарады закончилась. Дело принимает совсем дурной оборот. - Итак, кольцо взял немец.

- Он провел рукой по подбородку, на котором темнела полуторасуточная щетина.  - А что Следопыт. Я сижу у себя точно на раскаленных углях.