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A horizontal stream of charged particles is accelerated to velocity `3 xx10^(7) m s^(-1)` immediately before being allowed into an electric field between teo horizontal plates separated by 2 cm and maintained at a p.d. of 100 V. The stream is deflected by 5 mm. Calculate e/m of the charged particles of the stream. (Length of plates =10 cm).
[Hint: Electric field between plates = rate of change of potential]

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The correct Answer is:
A, C
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