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

Dual Nature of Matter and Radiation: JEE Main 2022 Physics question

JEE Main 2022 · 26 Jun, Evening shift · Q6648

JEE Main 202226 Jun, Evening shiftPhysicsEasyDual Nature of Matter and Radiation146× since 2002

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 :

JEE Main 2022 Dual Nature of Matter and Radiation Question with Solution (26 Jun Evening shift, Q6648) | JEE Arc

JEE Main 2022 · 26 Jun, Evening shift · Q6648

JEE Main 202226 Jun, Evening shiftPhysicsEasyDual Nature of Matter and Radiation146× since 2002

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 :