A beam of electrons is moving with constant velocity in a region having simultaneous perpendicular electric and magnetic fields of strength `20Vm^(-1)` and 0.5 T, respectively at right angles to the direction of motion of the electrons. Then, the velocity of electrons must beA. `8 m//s`B. `20 m//s`C. `40 m//s`D. `(1)/(40)m//s`

A beam of electrons is moving with constant velocity in a region havin

1.	A beam of electrons is moving with constant velocity in a region having simultaneous perpendicular electric and magnetic fields of strength `20Vm^(-1)` and 0.5 T, respectively at right angles to the direction of motion of the electrons. Then, the velocity of electrons must beA. `8 m//s`B. `20 m//s`C. `40 m//s`D. `(1)/(40)m//s`
Answer» Correct Answer - c

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