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Question

What is the ratio of mass of an electron to the mass of proton?
$1 : 2$
$1 : 1$
$1 : 1837$
$1 : 3$

A

1 : 2

B

1 : 3

C

1 : 1837

D

1 : 1

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Solution

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$\frac{m_{e}}{m_{p}} = \frac{9.10938356 \times 10^{- 31}}{1.6726219 \times 10^{- 27}}$

$\frac{m_{e}}{m_{p}} = \frac{1}{1836.152 67343}$

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