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Консультация № 198265
15.04.2020, 14:16
0.00 руб.
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Здравствуйте, уважаемые эксперты! Прошу вас решить задачи. Тема "Дифракция"
1. Круглое отверстие диаметром 2 мм расположено на расстоянии 1 м от точечного источника света. Светлое или темное пятно будет наблюдаться в центре непрозрачного экрана, расположенного за отверстием на расстоянии 3 м от него?
2. Плоская световая волна с длиной волны 500 нм падает нормально на непрозрачную плоскую преграду, в которой расположена щель шириной 0,2 мм. За преградой, параллельно ей, расположен экран. Найти ширину центрального дифракционного максимума.
3. Чему равна постоянная дифракционной решетки, если для наблюдения красной линии l=7×10^(–7) м в спектре второго порядка, зрительную трубу пришлось установить под углом 30° к оси коллиматора?
4. Сколько дифракционных максимумов можно наблюдать для жёлтой линии натрия l= 5×10^(—7) м при нормальном падении лучей, если постоянная дифракционной решетки равна d = 4 мкм ?
5. Постоянная дифракционной решетки шириной в 2,5 см равна 2 мкм. Какую разность длин волн может разрешить эта решётка в области желтых лучей l= 6×10^(—5) см в спектре второго порядка ?
Буду очень благодарна!
1. Круглое отверстие диаметром 2 мм расположено на расстоянии 1 м от точечного источника света. Светлое или темное пятно будет наблюдаться в центре непрозрачного экрана, расположенного за отверстием на расстоянии 3 м от него?
2. Плоская световая волна с длиной волны 500 нм падает нормально на непрозрачную плоскую преграду, в которой расположена щель шириной 0,2 мм. За преградой, параллельно ей, расположен экран. Найти ширину центрального дифракционного максимума.
3. Чему равна постоянная дифракционной решетки, если для наблюдения красной линии l=7×10^(–7) м в спектре второго порядка, зрительную трубу пришлось установить под углом 30° к оси коллиматора?
4. Сколько дифракционных максимумов можно наблюдать для жёлтой линии натрия l= 5×10^(—7) м при нормальном падении лучей, если постоянная дифракционной решетки равна d = 4 мкм ?
5. Постоянная дифракционной решетки шириной в 2,5 см равна 2 мкм. Какую разность длин волн может разрешить эта решётка в области желтых лучей l= 6×10^(—5) см в спектре второго порядка ?
Буду очень благодарна!
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