Question

Photoelectric effect takes place in element A. Its
work function is 2.5 eV and threshold wavelength
is 2. An other element B is having work function
of 5 eV. Then find out the maximum wavelength
that can produce photoelectric effect in B. what is ​

Answer 1

Answer: I don't know about the answer

Explanation: I don't know why is it is like that but it is like I don't know the answer