Q.
Millikan proved validity of Einstein's photoelectric equation by
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Dual Nature of Radiation and Matter
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Solution:
Millikan performed a series of experiments on photoelectric effect. He measured the slope of the straight line obtained for sodium. Using the known value of e, he determined the value of Planck's constant h. This value was close to the value of Planck's constant (=6.626×10−34Js)determined in an entirely different context.