In a Certain Mass Spectrograph, an Ion Beam Passes Through

question 3

Multiple Choice

In a certain mass spectrograph, an ion beam passes through a velocity filter consisting of mutually perpendicular fields and .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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Definitions:

Variance

A statistical measure of the dispersion representing how much the data points in a data set diverge from the mean value.

Mean

The arithmetic average of a set of numbers, calculated by adding them all together and dividing by the number of numbers.

Variance

A statistical measure of the dispersion of data points in a dataset, quantifying how far each data point lies from the mean.

Sum of Squared Deviations

The total of the squared differences between each observation and the mean of a dataset.