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One can define an alpha-volt (α-V ) to be the energy acquired by an α-particle when it is accelerated by a potential of 1 V. For this problem, you may take a proton to be 2000 times heavier than an electron. Then,

(a) 1 α-V = 1eV/4000

(b) 1 α-V = 2 eV

(c) 1 α-V = 8000 eV

(d) 1 α-V = 1eV

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Answer is : (b) 1 α-V = 2 eV

An alpha-volt (α-V) is the energy acquired by an α-particle (charge 2e units) when accelerated by a potential difference of 1 V.

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