Which of the following represents the correct increasing order of specific charge ( ratio) for an electron (), proton (), alpha particle (), and neutron ()?

Question

Which of the following represents the correct increasing order of specific charge ($e/m$ ratio) for an electron ($e$), proton ($p$), alpha particle ($\alpha$), and neutron ($n$)?

Prashant Kotian · Accepted Answer

Correct answer: A. The specific charge is the ratio of charge to mass (). For a neutron, charge is , so . For an -particle (), relative units. For a proton, relative unit. For an electron, the mass is extremely small ( of a proton), so its is exceptionally large. Hence, the order is . [5, 6]

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