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Electron, Photon, Photoelectric Effect and X-Rays — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsElectron, Photon, Photoelectric Effect and X-Rays1 Mark
Question

An electron beam is moving between two parallel plates having electric field 1.125 . A magnetic field 3  is also applied so that beam of electrons do not deflect. The velocity of the electron is

(a) 4225 m/s

(b) 3750 m/s

(c) 2750 m/s

(d) 3200 m/s

✓

Answer

(b) 3750 m/s

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