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Which experiment showed that electric charge is quantised?
AMillikan oil-drop experiment
BCompton scattering experiment
CHertz spark experiment
DDavisson-Germer experiment
Answer & Solution
Correct answer: A. Millikan oil-drop experiment
The charge on each oil drop was always a whole multiple of 1.602 × 10⁻¹⁹ C, which shows that charge comes in fixed units.
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