When light with a wavelength of 400 nm falls on the surface of sodium , electrons with a kinetic energy of1.05 xx 10^(5) " J mol"^(-1) are emitted . What is the maximum wavelength of light that will cause a photoelectron to be emitted ?

When light with a wavelength of 400 nm falls on the surface of sodium

1.	When light with a wavelength of 400 nm falls on the surface of sodium , electrons with a kinetic energy of1.05 xx 10^(5) " J mol"^(-1) are emitted . What is the maximum wavelength of light that will cause a photoelectron to be emitted ?
Answer» ANSWER :`b=616 NM`