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Консультация № 196203
26.08.2019, 22:31
0.00 руб.
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2
1
Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос:
На тонкую пленку жидкости, имеющую показатель преломления 𝑛1 = 1,45, падает перпендикулярно к поверхности свет с длиной волны 𝜆. При наименьшей толщине пленки 𝑑 = 0,103 м, в результате интерференции света,происходит усиление (условие max) отраженного света.
Найти 𝜆 длину волны
На тонкую пленку жидкости, имеющую показатель преломления 𝑛1 = 1,45, падает перпендикулярно к поверхности свет с длиной волны 𝜆. При наименьшей толщине пленки 𝑑 = 0,103 м, в результате интерференции света,происходит усиление (условие max) отраженного света.
Найти 𝜆 длину волны
Обсуждение
28.08.2019, 21:42
общий
это ответ
Здравствуйте, dar777!
Теория, знание которой необходимо для решения Вашей задачи, изложена, в частности, на страницах 90 -- 92 [1] (Вы можете загрузить этот учебник здесь; Вам полезно будет прочитать его, если Вы заинтересовались решением задач по физической оптике). В соответствии с этой теорией, по формуле (19.5) условие интерференционного максимума, соответствующего наименьшей толщине плёнки (пластинки) при принятых в условии задачи обозначениях имеет вид
откуда
(м)
мкм.
При решении задачи я исходил из того, что плёнка жидкости находится в среде, показатель преломления которой равен 1 (например, в воздухе). Кроме того, я предположил, что минимальная толщина плёнки равна не
м, а мм.
Рисунок, который Вам желательно иметь, Вы можете выполнить сами, взяв за основу рисунок 48 [1, с. 91] (находится в прикреплённом файле) и изменив его с учётом данных в условии задачи.
Литература
1. Савельев И. В. Курс общей физики. В 3 т. Т. 3. -- М.: Наука, 1970.
Теория, знание которой необходимо для решения Вашей задачи, изложена, в частности, на страницах 90 -- 92 [1] (Вы можете загрузить этот учебник здесь; Вам полезно будет прочитать его, если Вы заинтересовались решением задач по физической оптике). В соответствии с этой теорией, по формуле (19.5) условие интерференционного максимума, соответствующего наименьшей толщине плёнки (пластинки) при принятых в условии задачи обозначениях имеет вид
откуда
(м) мкм.При решении задачи я исходил из того, что плёнка жидкости находится в среде, показатель преломления которой равен 1 (например, в воздухе). Кроме того, я предположил, что минимальная толщина плёнки равна не
м, а мм.Рисунок, который Вам желательно иметь, Вы можете выполнить сами, взяв за основу рисунок 48 [1, с. 91] (находится в прикреплённом файле) и изменив его с учётом данных в условии задачи.
Литература
1. Савельев И. В. Курс общей физики. В 3 т. Т. 3. -- М.: Наука, 1970.
Прикрепленные файлы:
5
Это самое лучшее решение!
Об авторе:
Facta loquuntur.
Facta loquuntur.
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