Per NCERT, which experiment determined the charge on the electron as −1.602 × 10⁻¹⁹ C?
AR.A. Millikan's oil drop experiment (1906–14)
BChadwick's beryllium bombardment
CRutherford α-scattering
DBohr's hydrogen spectrum analysis
Answer & Solution
Correct answer: A. R.A. Millikan's oil drop experiment (1906–14)
Per NCERT §2.1.3, Millikan oil drop (1906–14) gave −1.6 × 10⁻¹⁹ C; current accepted value −1.602176 × 10⁻¹⁹ C.
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