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A flat circular fixed disc has charge +Q...

A flat circular fixed disc has charge +Q uniformly distributed on the disc. A charge +q is thrown with kinetic energy K, towards the disc along its axis. The charge q :

A

Hit the disc at the centre

B

Return back along its path after touching the disc

C

Return back along its path without touching the disc

D

Any of the above three situations is possible depending on the magnitude of E

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