Physics

Problem

The radiation corresponding to

3 \to 2

transition of hydrogen atom falls on a metal surface to produce photoelectrons. These electrons are made to enter a magnetic field of

3 \times 10^{-4} \text{ T}

. If the radius of the largest circular path followed by these electrons is

10.0 \text{ mm}

, the work function of the metal is close to: a.

1.8 \text{ eV}

1.1 \text{ eV}

0.8 \text{ eV}

1.6 \text{ eV}