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

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

From the following, what charges can be present on oil drops in Millikan's experiment (Here e is the electronic charge)

(a) Zero, equal to the magnitude of charge on α - particle

(b) 2e, 1.6  

(c) 1.6  

(d) 1.5 e, e

✓

Answer

(b) 2e, 1.6  

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