The minimum energy required by an electron to overcome the attractive forces of the nucleus is 0.6×10−19 J. What is the maximum kinetic energy of the ejected electron if the material is radiated with a light of wavelength 2210 nm?

The minimum energy required by an electron to overcome the attractive

1.	The minimum energy required by an electron to overcome the attractive forces of the nucleus is 0.6×10−19 J. What is the maximum kinetic energy of the ejected electron if the material is radiated with a light of wavelength 2210 nm?
Answer» The minimum energy required by an electron to overcome the attractive forces of the nucleus is $0.6 \times 10^{- 19} J$ . What is the maximum kinetic energy of the ejected electron if the material is radiated with a light of wavelength $2210 nm$ ?