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Dual Nature of Radiation question

2021 · 20 Jul · Shift 1 · Q57
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Dual Nature of Radiation question

2021 · 20 Jul · Shift 1 · Q57

JEE MainPhysicsDual Nature of RadiationMCQ+4 / −1
The radiation corresponding to 3 →\to→ 2 transition of a hydrogen atom falls on a gold surface to generate photoelectrons. The electrons are passed through a magnetic field of 5 ×\times× 10 −-− 4 T. Assume that the radius of the largest circular path followed by these electrons is 7 mm, the work function of the metal is : (Mass of electron = 9.1 ×\times× 10 −-− 31 kg)
  1. A
    1.36 eV
  2. B
    1.88 eV
  3. C
    0.82 eV
  4. D
    0.16 eV
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