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Консультация № 201358
25.08.2021, 17:59
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Уважаемые эксперты! Пожалуйста, ответьте на вопрос
В жидкости с показателем преломления ?3/2 вертикально стоит колышек 2см.Найти длину тени,если если свет падает на поверхность жидкости под углом 60 градусов.
В жидкости с показателем преломления ?3/2 вертикально стоит колышек 2см.Найти длину тени,если если свет падает на поверхность жидкости под углом 60 градусов.
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Обсуждение
25.08.2021, 19:44
общий
это ответ
Здравствуйте, mari_nikopol!
Предлагаю Вам следующее решение задачи.
Дано:
-- показатель преломления жидкости, в которой стоит колышек; 
см -- высота колышка; 
-- угол падения света на поверхность жидкости.
Определить:
-- длину тени от колышка.
Согласно закону преломления, отношение синуса угла
падения к синусу угла 
преломления равно относительному коэффициенту 
преломления жидкости по отношению к воздуху, который, в свою очередь, равен отношению абсолютных коэффициентов преломления 
воздуха и 
жидкости, то есть 
Тогда 
приняв 
получим
(см).
Ответ:
см.
Предлагаю Вам следующее решение задачи.
Дано:
-- показатель преломления жидкости, в которой стоит колышек; см -- высота колышка; -- угол падения света на поверхность жидкости.Определить:
-- длину тени от колышка.Решение
Согласно закону преломления, отношение синуса угла
падения к синусу угла преломления равно относительному коэффициенту преломления жидкости по отношению к воздуху, который, в свою очередь, равен отношению абсолютных коэффициентов преломления воздуха и жидкости, то есть Тогда приняв получим (см).Ответ:
см.
Об авторе:
Facta loquuntur.
Facta loquuntur.
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