A) \[9.6\times {{10}^{7}}\,\,C\,\text{k}{{\text{g}}^{-1}}\]
B) \[19.6\times {{10}^{7}}\,\,C\,\text{k}{{\text{g}}^{-1}}\]
C) \[4.8\times {{10}^{7}}\,\,C\,\text{k}{{\text{g}}^{-1}}\]
D) \[2.4\times {{10}^{7}}\,\,C\,\text{k}{{\text{g}}^{-1}}\]
Correct Answer: C
Solution :
Specific charge on proton\[={{\left( \frac{e}{m} \right)}_{p}}\] \[=9.6\times {{10}^{7}}C/kg\]specific charge on a-particle, \[{{\left( \frac{q}{m} \right)}_{a}}=\frac{2e}{4m}=\frac{1}{2}{{\left( \frac{e}{m} \right)}_{p}}=\frac{1}{2}\times 9.6\times {{10}^{7}}\] \[=4.8\times {{10}^{7}}C/kg\]
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