The mass of the electron varies with

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(C) Mass is generally considered a constant for physical applications at low velocities. However,according to Einstein's theory of special relativity,

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Velocity

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(C) Mass is generally considered a constant for physical applications at low velocities. However,according to Einstein's theory of special relativity,as an object's speed approaches the speed of light,its relativistic mass increases. The formula for the variation of mass with velocity is given by:$m = \frac{m_0}{\sqrt{1 - \frac{v^2}{c^2}}}$where $m$ is the relativistic mass,$m_0$ is the rest mass,$v$ is the velocity of the electron,and $c$ is the speed of light.

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