A) 2 ms
B) 4 ms
C) 3 ms
D) 1 ms
Correct Answer: D
Solution :
\[T=\frac{2\pi m}{qB}=\frac{2\times 3.14\times 9.1\times {{10}^{-31}}}{1.6\times {{10}^{-19}}\times 3.534\times {{10}^{-5}}}\] \[=1\times {{10}^{-6}}sec=1\mu sec.\]
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