A) \[1.1\times {{10}^{-29}}kg\]
B) \[1\times {{10}^{-29}}kg\]
C) \[\frac{1}{11}\times {{10}^{-29}}kg\]
D) \[0.1\times {{10}^{-29}}kg\]
Correct Answer: C
Solution :
: Gyromagnetic ratio of an electron \[=\frac{e}{2{{m}_{e}}}\] \[=8.8\times {{10}^{10}}C\,k{{g}^{-1}}\] \[\therefore \] Mass of the electron, \[{{m}_{c}}=\frac{e}{2\times 8.8\times {{10}^{10}}C\,k{{g}^{-1}}}=\frac{1.6\times {{10}^{19}}C}{2\times 8.8\times {{10}^{10}}C\,k{{g}^{-1}}}\]\[=0.0909\times {{10}^{-29}}kg\] \[=\frac{1}{11}\times {{10}^{-29}}kg\]
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