Question

16. A magnetic field of 5.0 × 10 -4 tesla just perpen
dicular to the electric field of 15 kV/m in their
effect and electron beam passes undeflected
and perpendicular to both of them. The speed of
the electrons is
[AIPMT - 1996 |
1) 75 m/s
2) 3 x 10 4 m/s
3) 7.5 x 10 4 m/s 4) 3 x 107 m/s
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Answer 1

Answer:

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