The magnitude of ratio of the $e / m$ values for an electron and a proton is_____________.

0.000548

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1837

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1.008

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5.5 \times 10^{- 5}

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Solution

The correct option is B $1837$
Ratio of $e / m$ for electron and proton is $1837$ .

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e / m

α

1.758820 \times 10^{11} {C kg}^{- 1}

Mass of an electron is approximately 1837 times that of a proton.

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