A stream of charged particles enters into a region with crossed electric and magnetic fields as ...

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A stream of charged particles enters into a region with crossed electric and magnetic fields as shown in the figure. On the other side is a screen with a hole that is right on the original path of the particles
[KVPY 2009]
(a) No particle can get through the hole
(b) All particles can get through the hole
(c) Only positively charged particles with speed \( E / B \) can get through the hole
(d) All particles with speed \( E / B \) can get through the hole
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