Chemistry - Atomic Structure Question with Solution | TestHub

When photons of energy$4.25 \mathrm{e}\mathrm{V}$strike the surface of a metal A, the ejected photoelectrons have maximum kinetic energy,${\mathrm{T}}_{\mathrm{A}}$(expressed in eV) and de Broglie wavelength${\mathrm{\lambda }}_{\mathrm{A}}.$The maximum kinetic energy of photoelectrons liberated from another metal B by photons of energy$4.20 \mathrm{eV} \mathrm{i}\mathrm{s} {\mathrm{T}}_{\mathrm{B}}={\mathrm{T}}_{\mathrm{A}}-1.50 \mathrm{e}\mathrm{V}.$If the de Broglie wavelength of these photoelectrons is${\mathrm{\lambda }}_{\mathrm{B}}=2{\mathrm{\lambda }}_{\mathrm{A}},$then which is not correct?