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Консультация № 195209
10.04.2019, 21:35
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Здравствуйте! Прошу помощи в следующем вопросе:
Расстояние двух когерентных источников до экрана 1.5 м, расстояние между ними 0.18 мм. Сколько
светлых полос поместится на отрезке длиной 1 см, считая от центра картины, если
длина волны света 0.6 мкм?
Расстояние двух когерентных источников до экрана 1.5 м, расстояние между ними 0.18 мм. Сколько
светлых полос поместится на отрезке длиной 1 см, считая от центра картины, если
длина волны света 0.6 мкм?
Обсуждение
14.04.2019, 09:45
общий
это ответ
Здравствуйте, mari_nikopol!
Рисунок к задаче находится в прикреплённом файле.
Максимальная освещённость на экране будет в точке O, которая находится на равных расстояниях от обоих источников. В произвольной точке Ox экрана максимальная освещённость будет, если оптическая разность хода лучей от обоих источников содержит целое число длин волн, то есть соблюдается равенство [$916$]=s2-s1=k[$955$], где k -- номер светлой полосы, считая от точки O. Поскольку [$916$]=xd/L, постольку xd/L=k[$955$], k/x=d/([$955$]L)=0,18*10-3 м/(0,6*10-6 м*150 см)=2 (см-1).
Рисунок к задаче находится в прикреплённом файле.
Максимальная освещённость на экране будет в точке O, которая находится на равных расстояниях от обоих источников. В произвольной точке Ox экрана максимальная освещённость будет, если оптическая разность хода лучей от обоих источников содержит целое число длин волн, то есть соблюдается равенство [$916$]=s2-s1=k[$955$], где k -- номер светлой полосы, считая от точки O. Поскольку [$916$]=xd/L, постольку xd/L=k[$955$], k/x=d/([$955$]L)=0,18*10-3 м/(0,6*10-6 м*150 см)=2 (см-1).
Прикрепленные файлы:
Об авторе:
Facta loquuntur.
Facta loquuntur.
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