As shown in the figure, the uniform magnetic field between the two identical plates is $B$. There is a hole in plate. If through this hole a particle of charge $q$, mass $m$ and energy $E$ enters this magnetic field, then the particle will not collide with the upper plate provided
As shown in the figure, the uniform magnetic field between the two identical plates is $B$. There is a hole in plate. If through this hole a particle of charge $q$, mass $m$ and energy $E$ enters this magnetic field, then the particle will not collide with the upper plate provided
- A
$B > \frac{{2mE}}{{qd}}$
- B
$B > \frac{{\sqrt {2mE} }}{{qd}}$
- C
$B < \frac{{2mE}}{{qd}}$
- D
$B < \frac{{\sqrt {2mE} }}{{qd}}$
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