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TS EAMCET 2020 (Online) 10th September Morning Shift
MCQ (Single Correct Answer)
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-0
Photons of energy 2.4 eV and wavelength $\lambda$ fall on a metal plate and release photoelectrons with a maximum velocity $v$. By decreasing $\lambda$ by $50 \%$, the maximum velocity of photoelectrons becomes $3 v$. The work function of the material of the metal plate is
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