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In Fig. electromagnetic radiations of wa...


In Fig. electromagnetic radiations of wavelength 200nm are incident on a metallic plate A. the photoelectrons are accelerated by a potential difference of 10 V. These electrons strike another metal plate B from which electromagnetic radiations are emitted. The minimum wavelength of emitted photons is 100nm. If the work function of metal A is found to be `(xxx10^-1)ev`, then find the value of x. (Given `hc=1240eV` nm)

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`4`
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