The ratio of specific charge of a proton and an α-particle is :
A
2 : 1
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B
1 : 2
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C
1 : 4
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D
1 : 1
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Solution
The correct option is B 2 : 1 The ratio of the specific charge of a proton and an α-particle is 2:1. The specific charge is the charge to mass ratio. The specific charge of the proton is 1 and that of an α-particle is 0.5.