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An electron is not deflected on passing ...

An electron is not deflected on passing through a certain region , because

A

There is magnetic fiedl in that region and the electron enters into itin any direction.

B

There may be magnetic field but the velocity of electron may be parallel to the direction of magnetic field.

C

electron is a chargeless particle

D

there is electric field and the electron enters into it in any direction.

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The correct Answer is:
B
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