In a Certain Mass Spectrograph, an Ion Beam Passes Through

question 14

Multiple Choice

In a certain mass spectrograph, an ion beam passes through a velocity filter consisting of mutually perpendicular fields The beam then enters a region of another magnetic field perpendicular to the beam. The radius of curvature of the resulting ion beam is proportional to:

• A) EB'/B
• B) EB/B'
• C) BB'/E
• D) B/EB'
• E) E/BB'

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