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Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

In one type of mass spectrometer the charged particles pass through a velocity selector before entering the magnetic field. In another the particles pass through a strong electric field before entering the magnetic field. Compare the ratio of the radii of singly charged lithium ions of masses 6amuand 7amuin the two cases.

category

physics

options

  1. 1.15 and 1.07 (close to correct but slightly off)
  2. 0.9 and 1.0 (near to correct but incorrect order)
  3. 1.4 and 1.5 (exaggerated difference)
  4. 1.2 and 1.3
  5. 0.7 and 0.8 (incorrect proportions)
  6. 0.75 and 0.85 (similar but incorrect)
  7. 0.857 and 0.926
  8. 0.926 and 0.857
  9. 1.0 and 1.0 (suggesting no difference in radii)
  10. 0.5 and 0.6

src

stemez-Physics

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Source and history

Official source

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