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Magnetics question

2007 · Shift 0 · Q76
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  5. /2007 · Shift 0 · Q76

Magnetics question

2007 · Shift 0 · Q76

JEE MainPhysicsMagneticsMCQ+4 / −1
A charged particle with charge qqq enters a region of constant, uniform and mutually orthogonal fields E→\overrightarrow EE and B→\overrightarrow BB with a velocity v→\overrightarrow vv perpendicular to both E→\overrightarrow EE and B→,\overrightarrow B,B, and comes out without any change in magnitude or direction of v→\overrightarrow vv. Then
  1. A
    v→=B→×E→/E2\overrightarrow v = \overrightarrow B \times \overrightarrow E /{E^2}v=B×E/E2
  2. B
    v→=E→×B→/B2\overrightarrow v = \overrightarrow E \times \overrightarrow B /{B^2}v=E×B/B2
  3. C
    v→=B→×E→/B2\overrightarrow v = \overrightarrow B \times \overrightarrow E /{B^2}v=B×E/B2
  4. D
    v→=E→×B→/E2\overrightarrow v = \overrightarrow E \times \overrightarrow B /{E^2}v=E×B/E2
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