Предмет: Физика, автор: Аноним

1.)Какова красная граница фотоэффекта, если работа выхода электрона из метала A=33аДЖ?

Ответы

Автор ответа: serg451

0

Формула:
h*v=A
v=A/h=3,3*10^-19/6,63*10^-34=0,5*10^15 Гц

Автор ответа: Аноним

0

1)

аДж - аттоДжоуль

A=33аДЖ = 33*10(-18) Дж

h=6,626*10(-34) Дж*с

c=3*10(8) м/с

hv=A

частота v = A/h =33*10(-18) Дж / 6,626*10(-34) Дж*с =5*10(16) c-1 (Гц)

длина волны λ = с/v=3*10(8) /5*10(16) = 6(-9) м = 6 нм

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