Chemistry - Atomic Structure Question with Solution | TestHub

When photons of energy 4.25 eV strikes the metal surface 'X', the ejected photoelectrons have maximum kinetic energy ' ${\mathrm{T}}_{\mathrm{x}}$ ' (in eV) and de-Broglie wavelength ${\lambda }_{\mathrm{x}}$. For another metal surface 'Y' the photons strikes it by energy of 4.20 eV and maximum kinetic energy of photoelectrons ejected is ' ${\mathrm{T}}_{\mathrm{y}}$ ' (in eV) and de-Broglie wavelength ${\lambda }_{\mathrm{y}}$ such that ${\lambda }_{\mathrm{y}}=2{\lambda }_{\mathrm{x}}$ and ${\mathrm{T}}_{\mathrm{x}}-{\mathrm{T}}_{\mathrm{y}}=1.50\mathrm{eV}$. Then select the correct statement(s) of the following :

($h=6.6\times 10^{-34}Js$, $m_e=9\times 10^{-31}kg$, $1eV=1.6\times 10^{-19}J$)