The ratio of specific charge of a proton and an a-particle is : (a) 2:1 (b) 1:2 (c) 1 : 4 d) 1:1

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specific charge ( =frac{2}{m} ) proton ( =frac{e}{1} ) ( alpha rightarrow frac{2 e}{4} ) ( frac{e}{1}: frac{2 e}{42} ) 2: 1 Ans a

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