In the figure shown electromagnetic radiations of wavelength
200 nm are incident on the metallic plate
A. The photo electrons are accelerated by a potential difference
10 V. These electrons strike another metal plate
B from which electromagnetic radiations are emitted. The minimum wavelength of the emitted photons is
100 nm. The work function of the metal
A is
x eV, then the value of
x+2.2 is
(use
hc=12400 eV ∘A)
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