Отрицательно заряженная цинковая пластинка освещалась монохроматическим светом длиной волны 300 нм. красная граница для цинка составляет 332 нм. какой максимальный потенциал приобретает цинковая пластинка
omka02
2
25.09.2019 01:50
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1
eU = Eкин
Уравнение Эйнштейна для фотоэффекта
h*c/λ = Авых + e*U
Отсюда:
U = (h*c*λ - Авых) / e = (h*c/e) * (1/λ - 1/λкр)
Подставив данные, получили:
U = 0,4 В