A) 2 : 3
B) 3 : 2
C) 9 : 4
D) 4 : 9
Correct Answer: B
Solution :
(b) 3 : 2 As \[qvB=\frac{m{{v}^{2}}}{r}\] \[\therefore r=\frac{mv}{qB}\Rightarrow r\propto v\] or \[\frac{{{r}_{A}}}{{{r}_{B}}}=\frac{{{v}_{A}}}{{{v}_{B}}}=\frac{3}{2}\]You need to login to perform this action.
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