Question

A=7,5*10^-19 Дж Ек=4,5*10^-16Дж

Answer 1

Еф=h*c/л=A+Ek

л=h*c/(A+Ek)=6.6*10^-34*3*10^8/(7.5*10^-19 + 450*10^-19)=0.043*10^-7=4.3*10^-9 м