A metal surface is illuminated by a radiation of wavelength 4500 \stackrel{\circ}{A}. 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 : [26-Jun-2022-Shift-2]

Dual Nature of matter and Radiation Part 2

Section: Physics

Question : 94 of 100

Marks: +1, -0

A metal surface is illuminated by a radiation of wavelength 4500

∘

. The ejected photo-electron enters a constant magnetic field of 2‌mT making an angle of 90∘ with the magnetic field. If it starts revolving in a circular path of radius 2‌mm, the work function of the metal is approximately :

[26-Jun-2022-Shift-2]

1.36‌eV
1.69‌eV
2.78‌eV
2.23‌eV

Validate

Go to Question:

Prev Question

Next Question