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Консультация № 201091
05.06.2021, 10:29
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1
Здравствуйте! Прошу помощи в следующем вопросе:
"Сколько главных максимумов будет видно за дифракционной решеткой, изготовленной нанесением N=3000 равноудаленных штрихов на прозрачную полоску длины L=1см? Свет с длинной волны [$955$]=600нм падает на решётку нормально."
"Сколько главных максимумов будет видно за дифракционной решеткой, изготовленной нанесением N=3000 равноудаленных штрихов на прозрачную полоску длины L=1см? Свет с длинной волны [$955$]=600нм падает на решётку нормально."
Обсуждение
05.06.2021, 12:36
общий
это ответ
Здравствуйте, Alex!
Предлагаю Вам следующее решение задачи.
Дано:
-- число штрихов дифракционной решётки на длине 
см
м; 
нм
м -- длина волны света, падающего на решётку нормально.
Определить:
-- число главных максимумов, которые видны за решёткой.
Соотношение между постоянной
дифракционной решётки, длиной волны 
монохроматического света, падающего на решётку, углом 
между нормалью к решётке и направлением дифрагированных волн и номером 
главного максимума имеет вид
Чтобы рассчитать номер
последнего максимума, примем 
и получим
Значит,
поскольку по обе стороны от центрального максимума, порядок которого принимают равным нулю, находятся по пять максимумов.
Ответ:
Литература
Чертов А. Г., Воробьёв А. А. Задачник по физике: Учеб. пособие для студентов втузов. -- М.: Высш. шк., 1988.
Предлагаю Вам следующее решение задачи.
Дано:
-- число штрихов дифракционной решётки на длине см м; нм м -- длина волны света, падающего на решётку нормально.Определить:
-- число главных максимумов, которые видны за решёткой.Решение
Соотношение между постоянной
дифракционной решётки, длиной волны монохроматического света, падающего на решётку, углом между нормалью к решётке и направлением дифрагированных волн и номером главного максимума имеет видЧтобы рассчитать номер
последнего максимума, примем и получимЗначит,
поскольку по обе стороны от центрального максимума, порядок которого принимают равным нулю, находятся по пять максимумов.Ответ:
Литература
Чертов А. Г., Воробьёв А. А. Задачник по физике: Учеб. пособие для студентов втузов. -- М.: Высш. шк., 1988.
5
Об авторе:
Facta loquuntur.
Facta loquuntur.
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