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Консультация № 173629
24.10.2009, 19:05
0.00 руб.
0
1
1
Здравствуйте, уважаемые эксперты! Помогите, пожалуйста, решить задачу: 
4.16. Свет, проходя через жидкость, налитую в стеклянный сосуд (n = 1,5), отражается от дна, причем отраженный свет плоскополяризован при падении его на дно сосуда под углом 41°. Определить: 1) показатель преломления жидкости; 2) угол падения света на дно сосуда, чтобы наблюдалось полное отражение.
Должно получиться: 1) 1,73; 2) 60°7'.
4.16. Свет, проходя через жидкость, налитую в стеклянный сосуд (n = 1,5), отражается от дна, причем отраженный свет плоскополяризован при падении его на дно сосуда под углом 41°. Определить: 1) показатель преломления жидкости; 2) угол падения света на дно сосуда, чтобы наблюдалось полное отражение.
Должно получиться: 1) 1,73; 2) 60°7'.
Обсуждение
26.10.2009, 11:12
общий
это ответ
Здравствуйте, kot31.
Полная поляризация отражённого света наблюдается, когда угол между отражённым и преломлённым светом равен 90[$186$]
В этом случае угол преломления γ=180[$186$]-[$946$]-90[$186$]=90[$186$]-[$946$]=90[$186$]-[$945$]=49[$186$]
sin[$945$]/sinγ=n2/n1
n2/n1=0,87
n1=n2/0,87=1,73
Полное внутренне отражение наблюдается, когда
sinγ=sin[$945$]*n1/n2>1
sin[$945$]>n2/n1
sin[$945$]>0,87
[$945$]>60,4[$186$]
Полная поляризация отражённого света наблюдается, когда угол между отражённым и преломлённым светом равен 90[$186$]
В этом случае угол преломления γ=180[$186$]-[$946$]-90[$186$]=90[$186$]-[$946$]=90[$186$]-[$945$]=49[$186$]
sin[$945$]/sinγ=n2/n1
n2/n1=0,87
n1=n2/0,87=1,73
Полное внутренне отражение наблюдается, когда
sinγ=sin[$945$]*n1/n2>1
sin[$945$]>n2/n1
sin[$945$]>0,87
[$945$]>60,4[$186$]
5
Форма ответа
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