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As per your syllabus, the charge-to-mass ratio e/m_e of the electron, measured by J.J. Thomson in 1897, is which value?
A6.022 × 10²³ C kg⁻¹
B9.109 × 10⁻³¹ C kg⁻¹
C1.602 × 10⁻¹⁹ C kg⁻¹
D1.758820 × 10¹¹ C kg⁻¹
Answer & Solution
Correct answer: D. 1.758820 × 10¹¹ C kg⁻¹
As per your syllabus, eqn 2.1, Thomson's e/m_e = 1.758820 × 10¹¹ C kg⁻¹.
Other figures are Avogadro, m_e, and e.
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