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Electron, Photon, Photo-electric Effect and X-Rays — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsElectron, Photon, Photo-electric Effect and X-Rays1 Mark
MCQ
In Thomson's method of determining $e / m$ of electrons
  • A
    Electric and magnetic fields are parallel to electrons beam
  • ✓
    Electric and magnetic fields are perpendicular to each other and perpendicular to electrons beam
  • C
    Magnetic field is parallel to the electrons beam
  • D
    Electric field is parallel to the electrons beam
✓

Answer

Correct option: B.
Electric and magnetic fields are perpendicular to each other and perpendicular to electrons beam

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