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The radiation corresponding to 3 → 2 transition of hydrogen atom falls on a metal surface to produce photoelectrons. These electrons are made to enter a magnetic field of 3 × 10 –4 T. If the radius of the largest circular path followed by these electrons is 10.0 mm, the work function of he metal is close to -

1. 1.1 eV
2. 0.8 eV
3. 1.6 eV
4. 1.8 eV CAREER POINT , CP Tower, IPIA, Road No.1, Kota (Raj.), : 0744-6630500 www.ecareerpoint.com Email: info@cpil.in 25 / 40 CAREER POINT [ CODE – F ]

Correct answer: 1.1 eV

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