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AP EAPCET 06-Jul-2022 Shift 1 Paper

Section: Physics

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Question : 116

Total: 160

A radiation of 3.8eV falls on a metal surface to produce photo electrons. These electrons are made to enter a magnetic field of 2×10−4T. If the radius of the largest circular path followed by these electrons is 30mm, then the work function of the metal is
(Mass of electron me=9×10−31kg )

0.9eV
1.0eV
0.6eV
1.2eV

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