A) \[6\times {{10}^{5}}\,m/s\]
B) \[5\times {{10}^{-5}}\,m/s\]
C) \[1.2\times {{10}^{6}}\,m/s\]
D) \[3.8\,\times {{10}^{6}}\,m/s\]
Correct Answer: B
Solution :
Force on a moving charge in magnetic field \[F=q\upsilon B\] \[3.84\times {{10}^{10-27}}=3.2\times {{10}^{-19}}\times \upsilon \times 0.2\] \[\upsilon =5\times {{10}^{-5}}m/s\]
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