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Dual Nature Of Radiation

JEE Main 2022 (Online) 26th June Evening Shift

MCQ+4 / -12022

A metal surface is illuminated by a radiation of wavelength 4500 \(\mathop A\limits^o\). The ejected photo-electron enters a constant magnetic field of 2 mT making an angle of 90\(^\circ\) with the magnetic field. If it starts revolving in a circular path of radius 2 mm, the work function of the metal is approximately :

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