A) 8.83 cm
B) 9.23 cm
C) 10.5 cm
D) 11.25 cm
Correct Answer: A
Solution :
\[r=\frac{mv}{Bq}=\sqrt{\frac{2mE}{Bq}}\] \[=\sqrt{\frac{2\times 6.06\times 1.66\times {{10}^{-27}}\times 400\times 1.6\times {{10}^{-19}}}{1.6\times {{10}^{-19}}\times 0.08}}\] \[=8.83\,cm\]
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