a. A negatively charged electroscope can be discharged by
Chapter 38, Problem 38.25(choose chapter or problem)
a. A negatively charged electroscope can be discharged by shining an ultraviolet light on it. How does this happen? b. You might think that an ultraviolet light shining on an initially uncharged electroscope would cause the electroscope to become positively charged as photoelectrons are emitted. In fact, ultraviolet light has no noticeable effect on an uncharged electroscope. Why not?
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