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An electron enters the region between th...

An electron enters the region between the plates of a parallel plate capacitor at an angle `theta` to the plates. The plate width is `l`, the plate separation is `d`. The electron follows the path shown just missing the upper plate. Neglect gravity. Then,
`

A

`tan theta=2d//l`

B

`tan theta=4d//l`

C

`tantheta=8d//l`

D

The data given is insufficient to find a relation between `d,l,theta`.

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The correct Answer is:
B
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