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Two oil drop in millikon's experiment ar...

Two oil drop in millikon's experiment are falling with terminal velocity in the ratio `1:4`. The rario of their de-Broglie wave length is

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`upsilon_(T) prop r_(2)" " r prop sqrt(V_(T))`
`(r_(1))/(r_(2)) = sqrt((V_(1))/(V_(2))) = (1)/(2)" " (m_(1))/(m_(2)) = (1)/(8)`
`:. (lambda_(1))/(lambda_(2)) = (m_(2))/(m_(1)).(upsilon_(2))/(upsilon_(1))" " =(8)/(1).(4)/(1) = 32:1`
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