Photons of energy 2.4eV and wavelength \lambda fall on a metal plate and release photo electrons with a maximum velocity \upsilon. By increase in \lambda by 50 % the maximum velocity of photoelectrons becomes 3\upsilon. The velocity if the material of the metal plate is

TS EAMCET 10-Sep-2020 Shift 1 Solved Paper

Section: Physics

Question : 115 of 160

Marks: +1, -0

Photons of energy 2.4eV and wavelength λ fall on a metal plate and release photo electrons with a maximum velocity υ. By increase in λ by 50 % the maximum velocity of photoelectrons becomes 3υ. The velocity if the material of the metal plate is

2.1eV
1.7 eV
2.8 eV
2.0 eV

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