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Консультация № 200432
16.03.2021, 10:51
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Здравствуйте! Прошу помощи в следующем вопросе:
Найти общее число дифракционных максимумов, даваемое решеткой с постоянной 0,001 мм при длине волны 440 нм.
Найти общее число дифракционных максимумов, даваемое решеткой с постоянной 0,001 мм при длине волны 440 нм.
Обсуждение
21.03.2021, 06:38
общий
это ответ
Здравствуйте, gleb.babin!
Предлагаю Вам следующее решение задачи.
Дано:
м -- постоянная дифракционной решётки; 
м -- длина волны излучения, падающего на решётку.
Определить:
-- общее число дифракционных максимумов.
Дифракционная решётка не может отклонять лучи больше, чем на прямой угол. Поэтому, заменив
в формуле дифракционной решётки 
на 
получим
Число
обязательно должно быть целым, но оно не может быть равным 
так как при этом значение станет больше чего не может быть. Следовательно, по обе стороны от центрального максимума, соответствующего 
будет наблюдаться по 
максимума, а общее число дифракционных максимумов составит
Ответ:
Литература
Аксенович Л. А. Физика в средней школе: Теория. Задания. Тесты: Учеб. пособие для учреждений, обеспечивающих получение общ. сред. образования / Л. А. Аксенович, Н. Н. Ракина, К. С. Фарино; Под ред. К. С. Фарино. -- Минск: Адукацыя i выхаванне, 2004. -- 720 с.
Предлагаю Вам следующее решение задачи.
Дано:
м -- постоянная дифракционной решётки; м -- длина волны излучения, падающего на решётку.Определить:
-- общее число дифракционных максимумов.Решение
Дифракционная решётка не может отклонять лучи больше, чем на прямой угол. Поэтому, заменив
в формуле дифракционной решётки на получимЧисло
обязательно должно быть целым, но оно не может быть равным так как при этом значение станет больше чего не может быть. Следовательно, по обе стороны от центрального максимума, соответствующего будет наблюдаться по максимума, а общее число дифракционных максимумов составитОтвет:
Литература
Аксенович Л. А. Физика в средней школе: Теория. Задания. Тесты: Учеб. пособие для учреждений, обеспечивающих получение общ. сред. образования / Л. А. Аксенович, Н. Н. Ракина, К. С. Фарино; Под ред. К. С. Фарино. -- Минск: Адукацыя i выхаванне, 2004. -- 720 с.
Об авторе:
Facta loquuntur.
Facta loquuntur.
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