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A particle is moving three times as fast...

A particle is moving three times as fast as an electron. The ratio of the de Broglie wavelength of the particle to that of the electron is `1.813 xx 10^(-4)`. Calculate the particle’s mass and identify the particle.

A

Neutron

B

`alpha-`particle

C

Deuteron

D

Tritium

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The correct Answer is:
A
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