KEAM 2018 Physics and Chemistry Paper

Question : 33 of 120

Marks: +1, -0

The electric field of certain radiation is given by the equation

E=200{sin(4π×1010)t+sin(4π×1015)t}

falls in a metal surface having work function 2.0 eV. The maximum kinetic energy (in eV) of the photo electrons is
(use Planck’s constant (h)=6.63×10−34‌Js and electron charge (E)=1.6×10−19C)

Validate

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