A) \[F\]
B) \[F/2\]
C) \[\sqrt{2}F\]
D) \[F2\]
Correct Answer: C
Solution :
\[\frac{1}{2}m{{v}^{2}}=eV\] \[\Rightarrow \] \[v={{\left( \frac{2eV}{m} \right)}^{1/2}}\] Force \[F=evB\] \[F=eB{{\left( \frac{2eV}{m} \right)}^{1/2}}\] \[F\propto \sqrt{V}\] \[\frac{{{F}_{2}}}{{{F}_{1}}}=\sqrt{\frac{{{V}_{2}}}{{{V}_{1}}}}\] \[=\sqrt{\frac{2V}{V}}\] \[\therefore \] \[{{F}_{2}}=\sqrt{2}F\]You need to login to perform this action.
You will be redirected in
3 sec