Question : In Millikan's Oil Drop experiment, the oil drop is subjected to such forces whose nature does not fall under the category of:
Option 1: Viscous
Option 2: Gravitational
Option 3: Electrostatic
Option 4: Magnetostatic
Correct Answer: Magnetostatic
Solution : The correct option is Magnetostatic.
In Millikan's Oil Drop experiment, forces acting on the oil drop don't include magnetostatic forces. The experiment primarily involves electrostatic forces, specifically Coulomb's law, to measure the charge on the oil droplets. The experiment focuses on electrical forces acting on the charged oil drops, along with viscous drag from the surrounding air.
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