The mass of an electron in motion depends upon - (1) Direction of motion (2) B its velocity (3) C its velocity of e- (4) D it’s shell number

The mass of an electron in motion depends upon - (1) Direction of motion (2) B its velocity (3) C its velocity of e- (4) D it’s shell number
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(2) B its velocity Explanation: The electron has a mass that is approximately 1/1836 that of the proton. Quantum mechanical properties of the electron include an intrinsic angular momentum (spin) of a half-integer value, expressed in units of the reduced Planck constant, ħ.
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