rtion of the Bainbridge mass spectrometer is shown in the diagram below n a Bain

Question

rtion of the Bainbridge mass spectrometer is shown in the diagram below n a Bainbridge mass spectrometer the isotopes present have masses l1161 In the Bainbri n the photographic plate by the ions of tin-116 and the ions of tin-120? e masses 116, 117, 118, 119, spacing betweern th fthe isotopes of tin U.The electric and magnetic fields are E-25 kN/C and B = 0.25 T. What the marks produced on the photographic plate by the ions of tin-116 and the ions of iale i the specing bewe R 120 R116 Photographic plate

Explanation / Answer

v = speed of each = E/B = 25000/0.25 = 1 x 105 m/s

q120 = q116

R120 = M120 v /(q120 B) eq-1

also

R116 = M116 v /(q116 B) eq-2

taking the ratio of eq-1 with eq-2

R120 /R116 = M120 /M116 = 120/116 = 1.034

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