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AP EAPCET 25-Aug-2021 Shift 1 Paper

Section: Physics

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Question : 118

Total: 160

When a light of wavelength 4900 Å falls on a photosensitive metal, a negative 2 V potential is required to stop the emitted electrons. Then the work function of the material is nearly ______ . Given charge on electron =1.602×10−19 C and Planck's constant =6.625×10−34 J. s

1.1 eV
2.2 eV
0.53 eV
1 eV

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