# Photo-electric emission!

Photons of energy $$5eV$$ fall on the surface of a metal $$X$$ resulting in the emission of photo-electrons having maximum kinetic energy $$E(eV)$$ and de-Broglie wavelength $$\lambda$$. $$Y$$ is another metal on the surface of which photons of energy $$6eV$$ are incident and results in emission of photo-electrons of maximum kinetic energy $$(E-2)eV$$ and de-Broglie wavelength $$\sqrt3 \lambda$$. Work functions of metals $$X$$ & $$Y$$ are in the ratio of?

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