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Who measured Planck constant from the slope of the V0 versus frequency line for sodium?
AWilhelm Hallwachs
BR.A. Millikan
CA.H. Compton
DPhilipp Lenard
Answer & Solution
Correct answer: B. R.A. Millikan
Millikan used the known electron charge with the measured slope to get h, which matched the value found by other methods.
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